2.
a) I will be very sorry, if my friend betray me one day.
b) After I do my homework, I will call my cousin.
c) As soon as Dad comes home, Mum will ask him to drive her to her friend.
d) If I don't trust a person, I will never make friends with him/her.
3.
1. c
2. d
3. a
4. e
5. g
6. b
7. f
