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】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