问题
选择题
It took him half an hour _____ the work.
A.doing B.to do C.did
答案
答案：B
It takes sb some time to do sth某人花费多少时间做某事。
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It took him half an hour _____ the work.
A.doing B.to do C.did
答案：B
It takes sb some time to do sth某人花费多少时间做某事。