He must have left home yeserday,___he?

He must have left home yeserday,___he?
Q：答案是didn't 可是这句话不是完成时吗?完成时可以接具体时间点?
I wish to visit the summer palace next week,___?
Q:答案是may I 天,这是为哪样啊?
would you read my composition and correct the mistakes,___?
Q:any
she won't give up no matter how hard the work is.这句话的no matte rhow可以用however替换吗,怎么换
求大神回复.