--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：动词时态

题型：选择题