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Change there sentences into the passive voice:
1.people should send their complaints to the main office
=> Their complaints should be sent to the main office
1.people should send their complaints to the main office
=>Their complaints should be sent to the main office
Chúc bạn học tốt 
- The electric light bulb was invented by Thomas Edison.
- Coffee is made for her parents every day.
- Their complaints should be sent to the main office.
Chuyển các câu sau sang câu bị động:
1. People must not leave bicycle in the hall.
BICYCLE MUST NOT BE LEFT IN THE HALL.
2. Members can keep books for three weeks.
BOOKS CAN BE KEPT BY MEMBERS FOR THREE WEEKS.
3. People should send their complaints to the main office.
PEOPLE'S COMPLAINS SHOULD BE SENT TO THE MAIN OFFICE.
4. You must turn off all the switches before leaving the room.
ALL THE SWITCHES MUST BE TURNED OFF BEFORE LEAVING THE ROOM.
5. You must make an appointment in advance.
AN APPOINMENT MUST BE MADE IN ADVANCE
I.change these sentences into the passive voice
1.thomas edisonn invented the electric light bulb
=> The electric light bulb was invented by Thomas Edison.
2.she makes coffee for her parents every day
=> Coffee is made for her parents every day.
3.people should send their complaints to the main office
=> Their complaints should be sent to the main office.
4.somebody might steal your car if you had left the keys in it
=> Your car might be stolen if the keys had been left in it.
5.a short circuit could cause the fire
=> The fire could be caused by a short circuit.
6.lan is going to invite her friends to her birthday party
=> Lan's friends are going to be invited to her birthday party.
I.change these sentences into the passive voice
1.thomas edisonn invented the electric light bulb
=> The electric light bulb was invented by Thomas Edisonn
2.she makes coffee for her parents every day
=> Coffee is made for her parents every day
3.people should send their complaints to the main office
=> Their complaints should be sent to the main office
4.somebody might steal your car if you had left the keys in it
=> Your car might be stolen if the keys had been left in it
5.a short circuit could cause the fire
=> The fire could be caused by a short circuit
6.lan is going to invite her friends to her birthday party
=> Her friends are going to be invited by Lan to her birthday party
1, We hurried to school so as not to be late
=> We hurried to school in order not to to be late.
2, He climbed the tree in order to get a better view
=> He climbed the tree so as to get a better view.
3, You should get up early so that you will have time to review to lesson
=> You should get up early so as to have time to review to lesson.
4, Some young people like to earn their own living in order that they will be independent of their parents
=> Some young people like to earn their own living in order to be independent of their parents.
5, We should do morning exercises regularly so as to improve our health
=> We should do morning exercieses regularly in order to improve our healthy.
6, We should take advantage of the scientific achievements of the would so that we can develop our national economy
=> We should take advantage of the scientific achievements of the world so as to develop our national economy
7, every people in the world must unite their eforts to maintain and protest peace
=> Every people in the world must unite their eforts in order to/so as to maintain and protect peace.
1.We hurried to school so as not to be late.
=> We hurried to school so that we weren't late.
2.He climbed the tree in order to get a better view.
=>He climbed the tree so that he could get a better view.
3.You should get up early so that you will have time to review to lesson.
=>You should get up early in order to have time to review to lesson.
4.Some young people like to earn their own living so that they will be independent of their parents.
=> Some young people like to earn their own living in order to be independent of their parents.
5.We should do morning exercises regularly so as to improve our health.
=> We should do morning exercises regularly so that we can improve our health.
6.We should take advantage of the scientific achievements of the world so that we can develop our national economy.
=> We should take advantage of the scientific achievements of the world in order to develop our national economy.
7.Every people in the world must unite their efforts to maintain and protect peace.
=> Every people in the world must unite their efforts so that they can maintain and protect peace.
III. Use the correct verb form
1.This school bag (cost)___cost___150.000 dong.
2.(she/need)____Does she need____any stamps for overseas mail?
3.I (send)____will send____these postcards to my friends tomorrow.
4. How much (be)____are____local stamps?
5. How much (Lan/pay)___does Lan pay___for the phone card?
6.The phone is ringing. I (answer)____will answer____it.
7.Let’s (go)____go____to the post office.
8.Could you tell me how (get)____to get____to the nearest bus stop?
9.I’d like (send)____to send____this letter to the USA.
10.She needs (buy)____to buy____a phone card.
11.Could you (show)____show____me the way to the bus stop?
12.Lan and Hoa (go)___are going___to the post office now.
13.Liz (need)___needs____some stamps and envelopes.
14.Hoa needs (buy)___to buy___a phone card.
15.I (mail)____will mail____this letter tomorrow.
16.He (phone)___phones____his parents three or four times a week.
17.Nam wants (send)___to send___this postcard to his pen pal.
18.We would like (visit)____to visit____Ngoc Son temple.
Sửa lại tí:
1.This school bag (cost)____costs____150.000 dong.
Headache is a very common disease in the USA. Every year, about fifty million people have to go to the doctor because of headache. The symptoms of a headache are various. People can see black dots or bright spots in front of their eyes. They may also have pains only on one side of the head. Sometimes when the pain goes away, the head is sore. People have headache when they work too hard or they are too nervous about something. Medicine can help cure the disease but people usually have to do more than taking tablets.They can prevent headaches by changing their diets or their lifestyle or simply by going to bed.
1, Why is headache a common disease in the USA?
=>…………Because Every year, about fifty million people have to go to the doctor because of headache.…………
2, What can people see when they have headaches?
=>………People can see black dots or bright spots in front of their eyes.…………………………
3, May people have pains on only one side or two sides of the head?
=>……………They may also have pains only on one side of the head. …………………
4, When do people have headaches?
=>………People have headache when they work too hard or they are too nervous about something. ……………
5, Can they prevent headaches?
=>…………………………Yes,they can………………
B
b