16. The rain was heavy and ________ the land was flooded.
A) consequently B) continuously C) constantly D) consistently
17. The engine ________ smoke and steam.
A) gives up B) gives in C) gives away D) gives off
18. Don’t ________ this news to the public until we give you the go-ahead.
A) release B) relieve C) relate D) retain
19. I should like to rent a house, modern, comfortable and ________ in a quiet neighborhood.
A) all in all B) above all C) after all D) over all
20. ________ we have finished the course, we shall start doing more revision work.
A) For now B) Now that C) Ever since D) By now
答案：16-20 ADABB
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