* Exercise 1 :

A. This paragraph is about how to train a cat.
B. Since I was a child, I've been fascinated by scuba diving.

* Exercise 2 :

1. a) Sending cards is very popular in North America.
2. b) Summer is my favourite season.
3. a) We should raise city taxes.
4. b) Advances in technology have made the world seem smaller.
5. b) There are several factors to consider when you choose a university to attend.

* Exercise 3 :

1. Paul and his hobbies .
2. My mother's cooking .
3. My car's problems .
4. I love my job .
5. My worst vacation ever .
6. Different countries ,different cultures.
7. Autumn weather is the best .