--- Hi, Grandma, why do you look so tired? --- I’m tired. I _______ the cleaning all morning.A.didB

题目简介

--- Hi, Grandma, why do you look so tired? --- I’m tired. I _______ the cleaning all morning.A.didB

题目详情

--- Hi, Grandma, why do you look so tired?
--- I’m tired. I _______ the cleaning all morning.
A.didB.had doneC.have been doingD.have done
题型:单选题难度:偏易来源:不详

答案

C

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