1  "it was very kind of you to give me a hitchhike" the man said to us 
=> The man told us that it had been very kind of us to give him a hitchhlike.
2  "it was nice of you to do me a favour" he said to me
=> He told me that it had been nice of me to do him a favour
3   No, no didn't break the vase
=> He denied breaking the vase.
4   No, no I have never seen him.
=> She denied had never seen him.
5   No, no I didn't tell him the secret.
=> She denied telling him the secret.
6   No, I was not there yesterday
=> He denied hadn't been there yesterday.