把下列句子改为否定句和一般疑问句

1.I wasn't born in 1994.
Were you born in 1994?
2.I didn't do my homework yesterday.
Did you do your homework yesterday?
3.He didn't buy a house for his parents
Did he buy a house for his parents ?
4.They didn't have a good trip in Beijing
Did they have a good trip in Beijing ?
5.I didn't miss you.
Did you miss me?