问题标题：
—Howcleanthebedroomis!—Yes,Iamsurethatsomeone___it.—Howcleanthebedroomis!—Yes,Iamsurethatsomeone___it.A.cleansB.cleanedC.hascleanedD.hadcleaned—Thelightinhisroomisstillon.Doyouknow___—Inordertoprepare
问题描述：
—Howcleanthebedroomis!—Yes,Iamsurethatsomeone___it.
—Howcleanthebedroomis!
—Yes,Iamsurethatsomeone___it.
A.cleansB.cleanedC.hascleanedD.hadcleaned—Thelightinhisroomisstillon.Doyouknow___
—Inordertoprepareforthecomingexam.
A.ifheworkshardB.whyhestaysupsolate
C.whyishesobusyD.whenhewillstopworking
杜宁回答：
C现在完成时
.-这个房间多干净啊!
-是啊,我确定有人已经打扫过它.
选B,
解析：
inorderto是“为了……”的意思,表示目的、原因,
thelightisstillon是指灯还开着,说明已经很晚了
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