单项选择题

About two thirds of the population in China（）in the countryside.

A. is still living
B. were still living
C. was still living
D. are still living

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单项选择题
（）a rainy day, we'd better put the picnic off and stay at home.

A. It was
B. It is
C. It being
D. It has been
单项选择题
He meant（）his homework before lunch, but his pen didn't work.

A. finishing
B. having finished
C. finished
D. to finish
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