问题补充:
—Linda, I called you this morning, but nobody answered the phone.
—Im sorry. I football with my friends then.
A. play
B. played
C. am playing
D. was playing
答案:
A. play
B. played
C. am playing
(答案→)D. was playing
解析:句意:琳达,今天上午我给你打电话了,但是没有人接。——抱歉,那时我正在和我的朋友们踢足球。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D。