I’m ___ duty today. I must clean the classroom _____ school.A.after; onB.in; beforeC.on; afterD.for;

题目简介

I’m ___ duty today. I must clean the classroom _____ school.A.after; onB.in; beforeC.on; afterD.for;

题目详情

I’m ___ duty today. I must clean the classroom _____ school.
A.after; onB.in; beforeC.on; afterD.for; in
题型:单选题难度:中档来源:不详

答案

C  
            
试题分析: 句意:我今天值班,我必须放学后把教室打扫干净。on duty值班,after school放学后,故答案选C.

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