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His little brother spent half an hour c____ the mistakes in his homework last night.

题目详情
His little brother spent half an hour c____ the mistakes in his homework last night.
▼优质解答
答案和解析
His little brother spent half an hour c(orrecting )the mistakes in his homework last night.
注:correct 改正
SPEND +时间/金钱+ DOING STH 固定用法
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