Question

【题目】Yesterday morning he________ go out when someone knocked at the door.

A. was about to B. was going

C. was to D. was go to

Answer 1

【答案】A

【解析】

句意：昨天早上，他正要出去，正在这时有人敲门。be about to do sth when…“正要做某事，这时/就在那时…”。故选A。