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35.- Sorry, I can’t go camping with you.I have to prepare well enough for the entrance exam.

- ________! We can camp together next time.

A.Don't say so       B.Congratulations C.Good luck      D.No problem

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34.________ the Internet is of great help, I don’t think it’s a good idea to spend too much  

time on it.

A.While           B.As          C.Because            D.If

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33.- I’m really hungry now.

-That’s because you have left your lunch __________.

A.having untouched          B.to be untouched       

C.untouched               D.being untouched

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32.- How much do I owe you for this supper?

- _________.It’s nothing.

A.You are welcome                 B.Forget it

C.With pleasure                   D.That’s all right

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31.When Marx was in London, he _______ read at the library for hours.

A.would       B.might           C.could        D.should

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