--Whendoesyoursisterstartclass?--Shestartsclass________aboutseveno'c

发布时间:2020-08-06 04:45:56

--When does your sister start class?--She starts class ________ about seven o'clock.A.atB.butC.orD.also

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A解析考查介词at,in与on表时间的用法.在钟点之前用介绍at.
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