--Whatwereyoudoingat9o’clocklastSundaymorning?        ...

问题详情：

 --What were you doing at 9 o’clock last Sunday morning?

         --I ________.

        A. did my homework               B. am doing my homework

        C. do my homework                D. was doing my homework

【回答】

D

知识点：未分类

题型：未分类