问题：
—Did you see the traffic accident on East Street this morning?
— Yes, I _________ shopping with my friend Tina at the time.
A. have gone B. am going C. was going
—Did you see the traffic accident on East Street this morning?
— Yes, I _________ shopping with my friend Tina at the time.
A. have gone B. am going C. was going
— Yes, I _________ shopping with my friend Tina at the time.
A. have gone B. am going C. was going
参考答案：