11.I should have bought that car

 If only ………………………………………………………………………………

12.There was never any answer when we rang

 Every time …………………………………………………………………….

13. Carol has no difficulty in making friend.

 Carol finds ……………………………………………………………………….

14. He does it as if he was a fool.

 He …………………………..

15. Carol is a vegetarian. I cooked the meal for her last week. She enjoyed it

 Carol ………………………………………………………………

16. I bought a new typewriter. It cost me a lot of money

 The new ………………………………………………………………………….

17. What a funny story!

 It is ………………………………………………………………………………..

18. She and I have never been there before

 Neither ………………………………………………………………………..

19. You took those photographs, so we were arrested

 If …………………………………………………………………………………….

20. The professor is excellent. I am taking her course.

  The professor ………………………………………………………………..

21. Although his leg was broken, he managed to get out of the car

 In spite ……………………………………………………………………………

22. It may rain on your way home, so take a raincoat with you

 In case …………………………………………………………………………. 

23. Unless someone has  a key, we can’t get into the house

We can only get ………………………………………………………………

24.That question cannot be answered satisfactorily.

 There is ……………………………………………………………………………

25.Alan worked too hard at exam time,and this led to his illness

 Alan’s illness ………………………………………………………………….

1.student will have to clean the school yard before the school year
=> the school yard_________________________________________________
2.parents often make children study hard before exam
=>children___________________________________________________________
3.the last time we wrote to each other was last year
=>we have_________________________________________________
4.I am not a millionaire ,so I can't travel around the world
=> if I________________________________________________^.^
5. the teacher will correct exercises tomorrow
=>exercises____________________________________________
6.they have just sent an ambulance to the school
=> an ambulance _____________________________________
7.unless he phone immediately, he won't  get any information
=>if he_____________________________________________________
8. no one is making efforts to protect our environment
=>efforts_________________________________________________
9.Trung is often late for school; therefore, he will be punished by his form teacher
=>if trung ___________________________________________________________________________
10. ba has planted these trees in the garden for a long time
=>these trees____________________________________________________________