—Do you know _______ he turned off the lights or not when he left the classroom?—Sorry. I don't

题目简介

—Do you know _______ he turned off the lights or not when he left the classroom?—Sorry. I don't

题目详情

—Do you know _______ he turned off the lights or not when he left the classroom?
—Sorry. I don't know.
[     ]
A. what              
B. that                
C. whether          
D. why  
题型:单选题难度:中档来源:江西省月考题

答案

C

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