Question

【题目】I spent half an hour _______ my homework last night.
A.do
B.to do
C.doing
D.did

Answer 1

【答案】C
【解析】句意：昨天晚上我花了半个小时做我的作业。动词短语sb. spend +时间 + (in) doing sth.意为“某人花费时间做某事”。故选C。