单项选择题

A. Taxi-driver.
B. A porter.

C. A worker.
D. A teacher.
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单项选择题
A. I think you are right. B. I am full. C. Very nice. D. I am hungry.
A. I think you are right.
B. I am full.

C. Very nice.
D. I am hungry.
填空题
At present (develop) ______ countries use too much energy.
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