OldMcDonaldgaveupsmokingforawhile

发布时间:2020-07-25 15:15:00

Old McDonald gave up smoking for a while, but soon _____________ to his old ways.A.returnedB.returnsC.was returningD.had returned

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A解析gave up和returned是用连词but连接起来的两个并列动作,且两个动作都已成为过去,故B、C、D不妥。
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