20.--- Excuse me, but I want to use your computer to type a report.
--- You ______ have my computer if you don’t take care of it.
A. shan’t B.might not C. needn’t D.shouldn’t
19.Some children are crazy over the video games. They just can’t tear themselves away from them ______ they start.
A.since B.as C.even if D.once
18.I really don’t know ______ I had my wallet stolen.
A.when was it that B.that it was when
C.where it was that D.it was where that
17.______ we gave him something to eat, he would save it up for his little sister.
A.Whatever B.However C.Whichever D.Whenever
16.---What’s the matter, Alice? You look saD.
---Oh, nothing much. As a matter of fact, I ______ of my friends back home.
A.just thought B.have just been thinking
C.was just thinking D.have just thought
15. ______ it rains while we are a long way from shelter?
A.What about B.How about C.What if D.If
13.Is the collection going to be divided up or sold ______?
A.as a whole B.on the whole C.at all D.whole of
A.leave B.drop C.fall D.go
12.You should ______ your button before you give a lecture.
A.do up B.speed up C.clear up D.carry out
11.---To tell you the truth, you were expected to win the cooking competition.
---I’m sorry. ______.
A.I didn’t mind B.I let you down
C.Thank you D.I couldn’t