Look! We can’t cross the bridge. It   by some workers.
#77698
A
repairs
B
is repaired
C
is being repaired
D
is repairing
推荐题目
As it turned out to be a problem of no importance , we     so much time looking into it . 
#62607
A
needn’t spend
B
didn’t have to spend
C
needn’t have spent
D
oughtn’t to spend
 –Look! The boy is running fast! –He might ______ to catch a bus.
#75241
A
run
B
running
C
is running
D
be running