“Howmanyclassesdoyouhave_______Fridayafternoon?”“None.Wearefree.”A.inB.on

发布时间:2020-08-06 19:29:28

“How many classes do you have _______ Friday afternoon?”“None.We are free.”A.inB.onC.atD.to

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B解析具体到某一天的早上/中午/晚上,介词用on。
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