问题
选择题
I spent half an hour ___________ my homework.
A．finish doing
B．to finish doing
C．finishing to do
D．finishing doing
答案
答案：D
题目分析：句意是：我花了半个小时来完成家庭作业。有固定句式spend +doing sth 可知A和C 错误，由固定搭配finish+doing可知答案是D。
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