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 ---It’sdifficultforthevillagechildrentocrosstheriverfo...

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 ---It’sdifficultforthevillagechildrentocrosstheriverfo...

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

   --- I think a bridge ________ over the river.

       A. should be built     B. is being built    C. has been built     D. was built

【回答】

A

知识点:动词语态

题型:选择题

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