--- It’s difficult for the village children to cross the river for school.--- I think a bridge _______ over the river. 
#41858
A
should be built
B
is being built
C
has been built
D
was built
推荐题目
——How often do I need to feed the dog?——It___food everyday, or it will be hungry.
#39158
A
must give
B
must be give
C
must be given
D
must be gave
-- Are you going to the party? -- No, because I ______.
#42738
A
have asked
B
haven’t asked
C
have been asked
D
haven’t been asked