OldMcDonaldgaveupsmokingforawhile,

发布时间：2020-07-26 16:28:03

OldMcDonald gave up smoking for a while, but soon ________ to his old ways．A.returnedB.returnsC.was returningD.has returned

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A解析But连接的并列句子，前后时态一致。
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