_____entering the classroom, remember to take your seat and turn off your cell phone.A.AtB.FromC.Upo

题目简介

_____entering the classroom, remember to take your seat and turn off your cell phone.A.AtB.FromC.Upo

题目详情

_____entering the classroom, remember to take your seat and turn off your cell phone.
A.AtB.FromC.UponD.As
题型:单选题难度:偏易来源:不详

答案

C

试题分析:句意:一进入教室,记得坐下关掉手机。Upon+名词或动名词,表示“一…”,at“在…地方,听见…”,from“来自”,As“做为”,所以选C。

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