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't.
3.They didn't swim in the river yesterday.
Did they swim in the river yesterday?
-Yes, they did./No, they didn't.
4.He didn't buy a wallet yesterday.
Did he buy a wallet yesterday?
-Yes, he did./No, he didn't.
5.这句be动词单复数似乎有点问题，不能用“was”，应该用“were”
Li Ming and Wang Ming were not in the shop just now.
Were Li Ming and Wang Ming in the shop just now?
-Yes, they were./No,they weren't.
6.Those doctors didn't go to visit Shanghai last month .
Did those doctors go to visit Shanghai last month?
-Yes,they did./No,they didn't.
1. He was not in the station yesterday.
Was he in the station yesterday?
2.I was not a student three years ago.
Was I a student three years ago?
3.They didn't swim in the river yesterday.
Did they swim in the river yesterday?
4.He didn't buy a wallet yesterday.
Did he buy a wallet yesterday?
5.Li Ming and Wang Ming was not in the shop just now.
Was Li Ming and Wang Ming in the shop just now?
6.Those doctors didn't go to visit Shanghai last month.
Did those doctors go to visit Shanghai last month?
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