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29. A. how to write them        B. how should you write them

C. what to write them        D. what to write

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28. A. better       B. more difficult      C. worse     D. easier

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27. A. learn        B. learned         C. to learn    D. learning

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26. A. such a        B. such an        C. so a       D. so an

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24. ---How far is it from the hotel to ____ university?

---It is just ____ 700-metre walk from here.

A. a , an    B. the , a    C. an , a     D. the , an

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23. 7. I am busy ____ the book and I will try ____ it to you tomorrow.

A. reading , returning  B. to read, to return  C. reading , to return  D. to read, returning

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22. Listen! ______  beautiful music the pianist is playing!

A. How a       B. What a      C. What     D. How

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21. More than twenty ______ students are having an important esam at the moment.

A thousands       B thousands of   C thousand        D thousand of

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20. .---Where is David?

   ---He _______ to Turpan . He _____ the day before yesterday.

A. went , left    B. has gone , left  C. has been, has left  D. has left, went

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