He _________ in American for five years, and now he works in Shanghai.
#102614
A
have worked
B
worked
C
had worked
D
have been working
推荐题目
---When will the expert come and give the lecture on economic development?---Not until our program_______.
#99532
A
is approving
B
is to approve
C
has been approved
D
will be approved
The project alongside with the experiment we had once devoted so much time ______ perfectly.
#99849
A
to work out
B
to working out
C
to worked out
D
has worked out
 ---Monitor?  --- I’m not monitor of our class. I __ with the teacher until the monitor is elected.
#99988
A
will just help
B
am just to help
C
am just helping
D
have just helped