27. I didn’t arrive in time to see her.
It wasn’t early _____________________________________________________________
28. I’m sorry I was rude to see you yesterday.
I apologize________________________________________________________________
29. He didn’t hurry, so he missed the train.
If ______________________________________________________________________
30. John is the best tennis-player in the club.
No one___________________________________________________________________
31. We couldn’t drive because of the fog.
The fog __________________________________________________________________
32. Mary rang hours and hours ago.
It’s hours __________________________________________________________________
33. Why don’t you ask her yourself?
I suggest__________________________________________________________________
34. I started work for the company a year ago.
I’ve been __________________________________________________________________
35. Susan felt sick because she ate 4 cream cakes.

If Susan __________________________________________________________________ 36. You stole my best cassette, Amanda’, said William.
William accused____________________________________________________________ 37. Why don’t you meet to discuss to pay offer?
I suggest_________________________________________________________________ 38. We got lost because we didn’t have a map.
If ______________________________________________________________________ 39. I last saw him when I was a student.
I haven’t_________________________________________________________________ 40. It’s a six- hour drive from London to Edinburgh.
It takes ___________________________________________________________________ 41. ’I’m sorry, I gave you the wrong number’ said Paul to Susan

For centuries, people had local games where teams competed with a ball, but the rules of our modern game of football (1) ______________________________ (not write) until 1863 in England. Today this exciting and skilful sport (2) __________________________ (enjoy) all over the world. Every four years thirty-two countries (3) _________________________ (allow) to compete in the World Cup. The 2015 World Cup (4) ____________________________ (hold) in Brazil, and the matches (5) _____________________________ (watch) by a TV audience of over thirty billion people. The sport (6) ___________________________ (not play) only by men. Women’s football is quickly becoming more popular. The first Women’s World Cup took place in 1991 in China, where the competition (7) ____________________________ (win) by a team from the United States.

Ex 4: Rewrite the following sentence in order to keep the meaning as the first one

1. I am busy with my homework, I can’t go to the cinema tonight.
–> If I…………………………………………………………………………….
2. It is cold, we don’t go swimming today.
–> We……………………………………………………………………………
3. If you want my advice, I wouldn’t buy it.
–> If I …………………………………………………………………………….
4. I only come if they invite me.
–> Unless………………………………………………………………………...
5. He doesn’t revise all his lessons. He fails the exam. (nối 2 câu dùng if)
–> If he……………………………………………………………………………
6. We will be late unless we hurry.
–> If………………………………………………………………………………
7. The park is over there, only 5 minutes’ walk.
–> If you walk……………………………………………………………………..

8. In case it rains, we’ll stay at home
–> If………………………………………………………………………………..

9. We must go or we’ll be late.

–> If ……………………………………………………………………………..

10. I’ll only help you if you promise to try harder.

 –> Unless …………………………………………………………………………

11. When you press this button, this machine will start.

–> If……………………………………………………………………………….

12. My grandparents live so far away, so I don’t visit them every week.
 –> If………………………………………………………………………………..

Our lives (1) _____________________________ (make) better every day thanks to inventions. But sometimes, inventions can make our lives worse. This can happen when an invention (2) __________________________ (not use) according to the inventor’s plan. For example, Alfred Nobel, a Swedish scientist, invented a strong explosive in 1867. It (3) ________________________ (call) dynamite and it revolutionized the world of engineering. After its invention, many bridges, tunnels and other structures (4) _________________________ (build) with the help of dynamite. However, dynamite (5) _________________________ (also, use) to kill people in wars. This upset Nobel. Before his death, Nobel decided to use the money from his famous invention to make the world a better place. A special fund (6) ________________________ (start) in Nobel’s name. Every year, Nobel prizes (7) _________________________ (give) for extraordinary work in science, medicine, literature and the promotion of world peace.