Exercise 1

A- 2.     Before a cat learns anything, it first teaches its owner a lesson in humility.

B-5.     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 favorite 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 has several  hobbies 

2) My mother is professional in cooking

3)  the problems in my car

4) I am interested in my job 

5)  The worst vacation for my life  .

6) Different countries ,different cultures.

7) Autumn weather is the best  .