Question

--- It’s difficult for the village children to cross the river for school.
--- I think a bridge ________ over the river

1. A.
   should be built
2. B.
   is being built
3. C.
   has been built
4. D.
   was built

Answer 1

A
考查時態(tài)和被動語態(tài)。“對鄉(xiāng)村的孩子來說，跨過這條河去上學時困難的�！薄拔蚁霊�該在河上建一座橋。”根據(jù)答語可知，橋還沒建，是將來時；B項是現(xiàn)在進行時，C項是現(xiàn)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。