20. I'm extremely __________ about what I read in the press.

A. critical B. skeptical C. frightened D. convinced

21. If people don't learn from this, then his suffering and death were __________.

A. in vain B. on vain C. for vain D. to vain

22. Thanks ever so much for your help, I really __________ it.

A. appreciate B. thank C. like D. enjoy

23. __________ you are blind, you will not miss the astonishing changes taking place in Shanghai.

A. Although B. If C. Since D. Unless

24. You __________ drive carefully. The roads are wet.

A. had better B. would rather C. would D. had better

25. A: We went to Italy for a holiday last year.

B: That __________ nice.

A. can be B. must be C. must have been D. can’t have been

26. An inspection of the building revealed faults that might __________ have been overlooked.

A. otherwise B. because C. therefore D. however

27. We __________ TV last night when suddenly the lights went out.

A. watched B. were watching C. had watched D. had been watching

28. Without your timely help, we __________.

A. would not succeed B. would succeed

C. would have succeeded C. would not have succeeded

29. Stop writing. It’s time that you __________ your paper.

A. must hand in B. have to hand in

C. could hand in D. handed in

30. Please go and make sure __________ you get a receipt.

A. that B. if C. how D. why

 20. D 21. B 22. C 23. B 24. C 25. A

26. C 27. C 28. A 29. B 30. B