--- 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
 All the new books _______ to the poor village next month.
#41578
A
were sent
B
will be send
C
are sent
D
will be sent
—Where is Jim? —He            home since last week.
#37437
A
has left
B
has gone away from
C
left
D
has been away from