题目内容
---It’s difficult for the village children to cross the river for school.
---I think a bridge _________ over the river.
A. was built B. should be built C. has been built D. is being built
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题目内容
---It’s difficult for the village children to cross the river for school.
---I think a bridge _________ over the river.
A. was built B. should be built C. has been built D. is being built