20. The number of deaths from heart disease will be reduced greatly if people _____ to eat more fruit and vegetables.

A. are advised 　　B. be advised　　 　 C. be persuaded　　 　　 D. are persuaded

19. He suggested that the work _______ at once.

A. would started　 B. would be started　 C. should started　 D. should be started.

18. If it ___ tomorrow, what would we do?

A. rains　　 　 B. were to rain　 　　　　　 C. would rain　 　　　　　 D. rain

17. She ____ out alone in such a dark night.

A. dares not go　　　　　　 　　　　　　 B. dares not to go

C. dare not to go　　　　　 　　　　　　 D. doesn’t dare to go

16. A hardworking man ___ become a great scientist, but a great scientist ___ be a hardworking man.

A. can’t, must　　　　　　　　　　　　　　　　　　 B. may not, must　　 　　 C. must, can’t　　 　　　 D. may not, may not

15. – Have you found out anything, sir?

– We are sure that the thief entered the house through the window instead of breaking in. You ____ have closed the window before you left.

A. shouldn’t　 　　　　　　　　　　　　　　　　 B. couldn’t　 　　　　　　　 C. might　 　 D. mustn’t

14. I was on the highway when his car went past, followed by a police car. They ____ at least 150 km an hour.

A. should have been doing　　　 　　　　 B. would have done

C. could have done　　　　　　 　　　　 D. must have been doing

13. We ____ have proved great adventurers, but we have done the greatest march ever made in the past ten years.

A. shouldn’t　 　B. needn’t　 　　　　　 C. mustn’t　 　　　　　　　　 D. may not

12. -- Have you _____ with an idea?

-- Not yet, but I’ll ask my parents for some advice.

A. put up　　 　B. turned up　 　　　　 C. gone up　　 　　　　　　　 D. come up

11. – Why do you choose me to the difficult task?

-- Because you ____ do such a thing and nobody is fit for it.

A. would　　　 　　　　　　　　　　　　　　　　 B. can　　 　　　　　　　　　　 C. should　　 　　　 D. may