问题
选择题
-- I called you this morning, but nobody answered it.
-- Oh, we ______ some shopping at the supermarket.
A．are doing
B．were doing
C．have done
D．did
答案
答案：B
题目分析：句意：--今天早上，我给你打电话，但是没有人接。--哦，那时我们正在超市购物。分析：购物的动作发生在打电话的时候，体现过去进行时，构成was/were +doing.故选B