【2012 呼和浩特】1. —Which dress do you like best, Madam?

—Sorry, I can’t decide______ now.

A. to buy which one               B. buy which one

C. which one to buy               D. which I should buy it

【2012 呼和浩特】2. —I’m afraid the class has begun.

—Don’t worry. It _____ until the bell ______.

A. doesn’t begin; rings        B. won’t begin; will ring 

C. won’t begin; rings       D. doesn’t begin; will ring

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【2012年福建省福州市】3. -- Our classroom _______ every day.

     -- So it is. It's our duty to keep it clean and tidy.

     A. cleans                    B. is cleaning           C. is cleaned

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