1.Yes ,I have.
2,My thinking about a visit to Beijing.
3,Yes,I'd like to.
4,If the airticket is cheaper enough, I'll go there by airplane, or else by train.
1.No,I haven't been to Beijing.
2.I'm going to go hiking.
3.Yes,I do.
4.I can go there by train.
1,No, I haven't.
2,I am going to travel.
3.Yes, I do.
4.I can go to Beijing by train.
1,No, I haven't.
2,I am going to Xi‘an.
3.Yes, I do.
4.I can go to Beijing by airplane.