把下列句子改成否定句,一般疑问句,并给肯定回答,否定回答

题目

把下列句子改成否定句,一般疑问句,并给肯定回答,否定回答
1.He was in the station yesterday
2.I was a student three years ago
3.They swam in the river yesterday
4.He bought a wallet yesterday
5.Li Ming and Wang Ming was in the shop just now
6.Those doctors went to visit Shanghai last month

答案

1.He was not in the station yesterday. Was he in the station yesterday? -Yes, he was./No, he wasn't.2.I was not a student three years ago. Was I a student three years ago? -Yes, I was./No, I wasn'...