I have been to Macau before.(改否）

I have been to Macau before.(改否）
He has learned English for 5 years.(对for 5 years 提问）
We began to learn English three years ago.(改同义句）
补全对话：
A:Hello.2847396.B:Is that Mr Jones?
A:Sorry ,________.He left home a few minutes ago.
B:It's a pity!___________?
A:No,he won't be back soon.Will you ring him up this evening?
B:Sorry,but I won't be free tonight.
A:____________________?
B:It's very kind of you .There'll be a talk on English history at 1:30 tomorrow afternoon ._____________.
A:I certainly will .__________________as soon as he comes back.
B:Thanks a lot .Goodbye.