—Does Liu Hui serve in the army? —No, but he ________ in the army for three years. 
#104726
A
served
B
has served
C
is serving
D
would serve
推荐题目
 She’s already two hours late. What ______ to her?
#104859
A
can have happened
B
may have happened
C
should have happened
D
must happen
All that can be said ______.
#103825
A
has been said
B
have been said
C
is said
D
are to be said
- I'm sorry. I ____________you _______ to me.
#104238
A
don’t know; are speaking
B
don't know; were speaking
C
didn't know; were speaking
D
didn't know; are speaking