1)Have you already met Mr. Bin and his wife?
2) I have been to America.
3)They haven’t finished yet.
4)We have bought a new TV set.
5)I have known him for years.
1)Have you already met Mr. Bin and his wife?
2) I have been to America.
3)They haven’t finished yet.
4)We have bought a new TV set.
5)I have known him for years.