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I spent half an hour ______ this difficult math problem.A、having worked onB、to
I spent half an hour ______ this difficult math problem.A、having worked onB、to
游客
2024-01-15
49
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问题
I spent half an hour ______ this difficult math problem.
选项
A、having worked on
B、to work on
C、on work
D、working on
答案
D
解析
本句测试“spend (some time,some money)in doing sth (on sth)”句型,因此选D。例如;He spent his life writing the book. (他花一生的时间写这本书。) He spends more time on sports than on studies. (他花在体育运动上的时间比花在学习上的时间多。)
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