1 changeable

2 acquaintance

3 suspicious

4 celebration

5 voluntary

6 enjoyment

7 courteously

8 constant

9 embarrassment

10 organizations

41 Lan denied having broken the mobile phone

42 Had the bag not been heavy, we could have taken it with us

43 He apologized for having to leave so early

44 After having a good meal, they went to dance

45 If Jane took some exercise, she wouldn't be unfit

46 America is thought to be found by Columbus before others

47 Mike hates being criticizied

48 All of us found she suddenly left the job surprising 

49 He suggested "The house may be painted green"

50 I am going to have my roof mended tomorrow

31 announcement

32 scientific

33 action

34 happily

35 confidences

36 competition

37 imaginative

38 disadvantaged

39 beautifully

40 careful

1 cunfidence

2 excited

3 disadvantage

4 difficult

5 educational

6 seriously

7 representatives

8 sympathize

9 traditionally

10 inventive

1 The beginning of spring is celebrated in many parts of the world

2 Finding no one at home, he left the house in the bad temper

3 If the bag hadn't been heavy, We could have taken it with us

4 Lan denied having broken the mobile phone

5 Not hearing what he said, I asked him to repeat it

6 You's better take a taxi so as not to miss your train

7 We found Jack sleeping on the sofa when we arrived

8 The novel was so interesting that I read it many times

9 Because of her bad memory, she doesn't make much progress in his English

10 She blamed him for having ignored the notice about life-saving equipment

41 If it hadn't been for Laura's report, I wouldn't have been able to finish the project

42 A friend of mine, whose father is the manager of a company, helped me to get a job

43 I congratulated John on having passed his exam

44 I have not watched a movie for a year

45 The document which was sent to the boss yesterday was very important

46 He doesn't want to be treayed like a baby by his mother

47 The people who are waiting for the bus now are getting wet

48 The children of whom she is taking care arre orphans

49 The problem in which we are very interested has been dicussed in class

50 Had he studied hard, he wouldn't have failed the exam

Good luck!

1:  Only with careful environmental planning can we protect the world in which we live.

D.  We can protect the world we live in only with careful environmental planning.

2:  You should take regular exercises instead of sitting in front of the television all day.

A.  Taking regular exercises is better than sitting in front of the television all day.

3:  It was not until after I got home that I realized I had not set the burglar alarm in the office.

C.  I didn’t turn the burglar alarm on before I left the office, but I only became aware of this after I'd arrived home.

4:  He did not remember the meeting. He went out for a coffee with his friends then.

D.  Not remembering the meeting, he went out for a coffee with his friends.

5:  They left their home early. They didn’t want to miss the first train.

C.  They left their home early so as not to miss the first train.

6:  I’m sure Luisa was very disappointed when she failed the exam

B.  Luisa must have been very disappointed when she failed the exam.

7.  “You had better see a doctor if the sore throat does not clear up.” she said to me.

D.  She suggested that I see a doctor if the sore throat did not clear up.

8:  Without her teacher’s advice, she would never have written such a good essay

C.  She wrote a good essay as her teacher gave her some advice.

9.  She tried very hard to pass the driving test. She could hardly pass it.

C.  No matter how hard she tried, she could hardly pass the driving test.

10. Mary loved her stuffed animal when she was young. She couldn’t sleep without it.

A. When Mary was young, she loved her stuffed animal so much that she couldn't sleep without it.

1:  Only with careful environmental planning can we protect the world in which we live.

A.  Careful environmental planning protects the world we live in.

B.  Planning the environment carefully, we can protect the world in which we live.

C.  Protecting the world we live in, we plan the environment carefully.

D.  We can protect the world we live in only with careful environmental planning.

2:  You should take regular exercises instead of sitting in front of the television all day.

A.  Taking regular exercises is better than sitting in front of the television all day.

B.  Sitting in front of the television all day helps you take regular exercises.

C.  Sitting in front of the television all day and taking exercises are advisable.

D.  Don’t take regular exercises, just sit in front of the television all day.

3:  It was not until after I got home that I realized I had not set the burglar alarm in the office.

A.  On the way home, I suddenly realized that I had forgotten to turn on the burglar alarm in the office.

B.  Fortunately, I realized that I hadn't set the burglar alarm just before I left for home; otherwise, I would have had to travel all the way back to the office.

C.  I didn’t turn the burglar alarm on before I left the office, but I only became aware of this after I'd arrived home.

D. I wish I had realized before I arrived home that I hadn't turned on the burglar alarm in the office, then it would have been easier to go and set it.

4:  He did not remember the meeting. He went out for a coffee with his friends then.

A.  Not remember the meeting, he went out for a coffee with his friends.

B.  Not to remember the meeting, he went out for a coffee with his friends.

C.  Not remembered the meeting, he went out for a coffee with his friends.

D.  Not remembering the meeting, he went out for a coffee with his friends.

5:  They left their home early. They didn’t want to miss the first train.

A.  They left their home early so as to not miss the first train.

B.  They left their home early for fear that they wouldn’t miss the first train.

C.  They left their home early so as not to miss the first train.

D.  They left their home early in order that not to miss the first train.

6:  I’m sure Luisa was very disappointed when she failed the exam

A.  Luisa must be very disappointed when she failed the exam.

B.  Luisa must have been very disappointed when she failed the exam.

C. Luisa may be very disappointed when she failed the exam.

D. Luisa could have been very disappointed when she failed the exam.

26B

27 C

28 D

29 C

30 A

31 C

32 C

33 D

34 C

35 D

36 C

37 D

38 B

39 A

40 B

41 B

42 A

43 B

44 B

45 B

46 D

47 B

48 A

49 C

50 C

International Women's Day (March 8) is a global day for celebrating the social, economic, cultural and political achievements of women. The day also marks a call to action for accelerating gender parity.