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把下列句子改为否定句1、Hemusthaveheardthehadnewsalready.2、IsmustbeJane'sdog

题目详情
把下列句子改为否定句
1、He must have heard the had news already.
2、Is must be Jane's dog


▼优质解答
答案和解析
1、He couldn't have heard the had news already.
2、It can't be Jane's dog