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单项选择-It’sdifficultforthevillagechildrentocrosstheriverf...

单项选择

-It’s difficult for the village children to cross the river for school.

      -I think a bridge(桥)______over the river.

       ld be built   being built  been built  built

【回答】

A

知识点:动词语态

题型:选择题

TAG标签:#单项 #