Question

--- 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

Answer 1

A

考查時態和被動語態。“對鄉村的孩子來說，跨過這條河去上學時困難的。”“我想應該在河上建一座橋。”根據答語可知，橋還沒建，是將來時；B項是現在進行時，C項是現在完成時，D項是過去時，故排除B、C、D。A項表示將來。故選A。