In order to finish the experiment successfully, the professor always _________, for every day the li

题目简介

In order to finish the experiment successfully, the professor always _________, for every day the li

题目详情

In order to finish the experiment successfully, the professor always _________, for every day the light in his room didn’t go out until 4 a.m.
A.mixed upB.cleaned upC.turned upD.stayed up
题型:单选题难度:中档来源:不详

答案

D

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