题目内容

——I'm not finished with my dinner yet.——But our friends _____ for us.

A. will wait
B. wait
C. have waited
D. are waiting

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I walked slowly through the market, where people ____ all kinds of fruits and vegetables. I studied the prices carefully and bough what I need.

A. sell
B. were selling
C. has sold
D. have sold

I ______ dinner when a quarrel broke out among my son and daughter.

A. preparing
B. am preparing
C. was preparing
D. prepared

In fact, more and more people ______ to live a greener, healthier and more environmentally friendly "green life".

A. chose
B. choose
C. are choosing
D. have chosen

Food supplies in the flood-stricken area _______. We must act immediately before there's none left.

A. have run out
B. are running out
C. have been run out
D. are being run out

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