Question

【题目】I _______ my face when suddenly someone _______ at the door. ( )

A.washed, knockedB.washed, was knocking

C.was washing, was knockingD.was washing, knocked

Answer 1

【答案】D

【解析】

句意：我正在洗脸，突然有人敲门。当……时候when在这里是并列连词，引导一般过去时的状语从句，那么主句应该用过去正在进行时态。D符合题意。故选D。