第1个回答 2010-07-29
he must have finished doing his work本回答被提问者采纳
第2个回答 2010-07-29
He must have finished his work.
第3个回答 2010-07-29
He must have finished his job.
第4个回答 2010-07-29
He must have finished his work
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第5个回答 2010-07-29
He must have finished his work