题目内容

If he ____ on tourists for his business,he would have to close his shop.

A. depends
B. will depend
C. depended
D. had depended

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He built a telescope ____ he could study the skies in his free time.

It is imperative that you ____ here in time.

A. shall arive
B. must arrive
C. could arrive
D. arrive

There are two _____ in our school

A. library
B. libraries
C. librarys

Thank you for your help,_____ we could not have finished the work in time.

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