Mọi người ơi giúp mình với:
1 "it was very kind of you to give me a hitchhike" the man said to us
2 "it was nice of you to do me a favour" he said to me
3 No, no didn't break the vase
4 No, no I have never seen him
5 No, no I didn't tell him the secret
6 No, I was not there yesterday
