--- It’s difficult for the village children to cross the river to get to school.
--- I think a bridge ________ over the river.
A.should be built | B.should build | C.was built | D.has been built |
--- It’s difficult for the village children to cross the river to get to school.
--- I think a bridge ________ over the river.
A.should be built | B.should build | C.was built | D.has been built |