Question

(2006年南京)

I ________ my homework while my parents ________ TV last night.

[　　]

A．did; have watched

B．was doing; were watching

C．had done; were watching

D．would do; were watching

Answer 1

答案：B
提示：

提示：根据while的句式和last night判断此题用过去进行时。