Question

【题目】I ______ the streets in our neighborhood this time yesterday when you called me.

A. was cleaning B. have cleaned C. am cleaning D. would clean

Answer 1

【答案】A

【解析】句意：昨天这个时候当你给我打电话的时候，我正在街上打扫卫生。根据this time yesterday可知，表示昨天这个时间正在进行的动作，应该用过去进行时。过去进行时的谓语动词应该是：was/were doing。故选A。