24、

 Space exploration has been made _______ with the development of modern science and technology.  

A. it possible        B. it was possible       C. possible        D. that possible  

23、As it turned out to be a small house party, we ______ so formally.  

A. needn't dress up                                B. shouldn't dress up  

C. were not necessary to dress up           D. needn't have dressed up  

22、

_____ smooth and soft, this kind of cloth made of silk ____ well.  

A. Felt; sells    B. Feeling; is sold     C. Felt; is sold    D. Feeling; sells  

21、Before the war broke out, many people _______ in safe places possessions they couldn't take with them.  

A. threw away         B. gave away       C. put away      D. carried away  

20、 Everyone fails now and then. It's how you react that makes a _____ in life.  

A. development       B. difference        C. point          D. progress  

19、

I think it advisable that he _____ for Tokyo soon.  

A. may leave         B. leave          C. will leave         D. leaves  

18、 Alice, stand beside Harry so that I can see which of you is ________.  

A. the taller           B. taller              C. tall          D. the tallest  

17、 ____ excited my friend, David greatly that he was chosen as chairman of the organization.  

A. What                B. That                C. It              D. As  

16、A wise man once said, “When one door shuts, _______ opens in life.”  

A. the other            B. other               C. either         D. another  

15、We've only got one day in Paris, _____ we'd better make the most of it.  

A. or              B. so              C. however           D. then