It’s difficult for the village children to cross the river to get to school. We think a bridge over the river
A. was built
B. should be built
C. has been built
D. is being built
网友回答
A. was built
(答案→)B. should be built
C. has been built
D. is being built
解析：句意：对于这个村庄的孩子们来说，过河去上学很困难。我们考虑应该在这条河上面建一座桥。结合语境可知下文宾语从句是对将来状态的虚拟，故用过去式助动词should，从句主语a bridge是动作对象，故用被动语态。