Question

— Did you see the film last night?
— No, I ______ some shopping at that time.

A．am doing

B．was doing

C．did

D．will do

Answer 1

B

试题分析：句意：你昨晚看电影了吗？——不，那时我正在做作业。结合语境可知下文描述的是过去某时正在进行的动作，故用过去进行时态，选B。