问题

(题文)Jack ________ in the lab when the power cut occurred.
A:works
B:has worked
C:was working
D:would work
B:has worked
C:was working
D:would work
正确答案是:
同类题型
The police found the lost car _____.
I had as much fun sailing the seas as I now dowith students.
There’s bread here. Go and buy some for us.
The man who is ________ in a black jacket is adetective from Australia.
(2013·山东,26)Mark needs to learn Chinese________his company is opening a branch in Beijing.