问题
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
B:is being built
C:has been built
D:was built
正确答案是：
同类题型
______ of his time ______ been spent on studies every day.
______ is widely acknowledged that all mankind is created ______.
We saw the football match_____ TV.[ ]
How can I go to the supermarket, Paul?—_____ bike.It’s not far from here. [ ]
What ____________ you _____________ last weekend?—I wrote some letters and read a book.