Question

【题目】－It's difficult for village children to cross the river to school.

－I think a bridge ____ over the river.

A. should be built B. will build C. is built D. was built

Answer 1

【答案】A

【解析】

试题句意：--对于山村的这些孩子穿过这条河上学是困难的，---我认为应当在河的上面建一座桥。should be done应当被允许做某事根据题意故选A。