when _ juice _ her room?last night A does B did clean C is clean D do cleaned

问题描述:

when _ juice _ her room?last night A does B did clean C is clean D do cleaned

答案: B
last night 用一般过去时,而特殊疑问句结构: 特殊疑问词+ did + 主语+ 动词原形
所以填 did.. clean
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B did clean
根据last night 可以得知,本题用一般过去时