问题
选择题
-I called you at nine this morning, but there was no answer.
- Oh, sorry. I _______ with my cousin in the supermarket.
A. shop B. was shopping C. will shop
答案
答案：B
考查情景交际和过去进行时。“今天早上九点我给你打电话了，但没人接。”“对不起，那时我正在和表弟一起在超市购物。”过去某个时刻正在发生的动作，用过去进行时。故选B。