赞 1314123456 幼苗
共回答了22个问题采纳率：86.4% 举报
应该是：
1 It took him half an hour to do his homework yesterday.
2 He spent half an hour doing his homework yesterday.
1 It took him half an hour to do his homework yesterday.
2 He spent half an hour doing his homework yesterday.
1年前
9
共回答了14个问题采纳率：92.9% 举报
it took him half an hour to do his homework yesterday.或者 he spent half an hour to do his homework yesterday.
1年前
2
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你能帮帮他们吗