Ответ:

2.

1) C

2) B

3) A

3.

1) false

2) true

3) true

4) false

5) false

4.

1) it won't be possible for a long time

2) the tickets are too expensive

3) will become much cheaper in the near future

4) author is neutral

5) If I get a chance to go into space, I suppose that I would use it. It's a fantastic experience, and it's sad to lose an opportunity like that.