Question

【题目】—Look! The lights in the classroom are still on.

—Oh, I forgot ________.

A. turning them off B. turn them off

C. to turn them off D. having turned them off

Answer 1

【答案】C

【解析】

试题分析：句意：-看，教室的灯还亮着。-哦，我忘记关灯了。forget后可接doing或者to do，接doing形式表示忘记曾做过……，接to do形式表示忘记去做……。故选C。