1. My hobby is collecting books because I love reading whenever I have time.

2. Why don't you go jogging because it can help you keep fit ?

3. I really enjoy going round the shops in my town to look for rare and old teacups.

4. My parents have just bought a new pair of roller skates.

5. It is very expensive to collect motorcycles because it costs you a lot of money to buy them and get them repaired.