问题

Is your mother a doctor in Qilu Clinic? –No!But she there for ten years

A:worked
B:has been working
C:has worked
D:had worked

正确答案是：

同类题型

If Helen says she will complete the job on time you can always ________ her to deliver the goods

38 Nowhere else in the world______ cheaper tailoring than in Hong Kong

Too bad—— I missed the early train ______ only a few minutes!

Tom and Paul usually watch TV ______weekends.

Even though the pure water is ____ gives sea water its main properties, the salinity of sea water affects both its weight and freezing point