The children ____ very quiet;I wonder what they ____ up to.A.were; are beingB.are being;areC.are;do

题目简介

The children ____ very quiet;I wonder what they ____ up to.A.were; are beingB.are being;areC.are;do

题目详情

The children ____ very quiet;I wonder what they ____ up to.
A.were; are beingB.are being;areC.are;doD.are being;do
题型:单选题难度:偏易来源:不详

答案

B

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