-Is your mother a doctor in Qilu Clinic? –No!But she        there for ten years.
#100112
A
worked
B
has been working
C
has worked
D
had worked
推荐题目
All the preparations for the task _________, and we’re ready to start.
#99042
A
complete
B
have completed
C
had been completed
D
have been completed
Suppose he ___ with me, what can I do?
#103966
A
won't go
B
don't go
C
hasn't go
D
isn’t going to go