More than a dozen students in that school ________ abroad for further study every year.
#99399
A
sent
B
are sent
C
have been sent
D
have sent
推荐题目
.--- I was lucky the win a gold medal in the800-metre race.--- You  ____ through hard training.
#102776
A
must go
B
should go
C
must have gone
D
should have gone.
Although he has lived with us for years, he ______ us much impression. 
#104996
A
hadn’t left
B
didn’t leave
C
doesn’t leave
D
hasn’t left