--- It’s difficult for the village children to cross the river for school. --- I think a bridge ________ over the river. 
#45065
A
should be built
B
is being built
C
has been built
D
was built
推荐题目
A new cinema _ in our city last year.
#44932
A
built
B
was built
C
will build
D
is built
 I think students _____ to do homework with friends.
#44494
A
should allow
B
should be allowed
C
were allowed
D
must be allowing
He was often seen _________ with charity work last year.
#44620
A
to help
B
helped
C
helping
D
help