A:Did you notice him come in?

问题描述:

A:Did you notice him come in?
B:No,I____a football game
A.have watched B.had watched C.am watching D.was watching

D
翻译:你注意到他进来吗?没,我(那时)正在看足球.
那时正在做什么=过去进行时=was watching