— Why? Tom, your shirt is so dirty!— Mum, I _____ my storeroom downstairs。A.cleanedB.have workedC.w

题目简介

— Why? Tom, your shirt is so dirty!— Mum, I _____ my storeroom downstairs。A.cleanedB.have workedC.w

题目详情

— Why? Tom, your shirt is so dirty!
— Mum, I _____ my storeroom downstairs。
A.cleanedB.have workedC.was cleaningD.have been cleaning
题型:单选题难度:偏易来源:不详

答案

D

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