Question

【题目】Jack’s teacher asked him _____ the lights after class.

A. turning offB. turned offC. to turn offD. turns off

Answer 1

【答案】C

【解析】

句意：杰克的老师让他在课下关灯。A. turning off 关掉；现在分词；B. turned off关掉，过去式；C. to turn off观点，动词不定式； D. turns off关掉，第三人称单数。短语ask sb. to do sth.表示让某人去做某事。根据题意，故选C。