III. Complete with the correct form of the verb in brackets.
1. I _______ (work) in a café when I _______ (meet) Melissa for the first time.
2. Jenny _______ (not watch) TV when I _______ (phone) her.
3. I _______ (think) my new T-shirt _______ (make) of cotton.
4. Sam _______ (play) golf at the moment.
5. There _______ (be not) any computers when I was a boy.
6. Yesterday at three o'clock I _______ (sit) on the sofa watching TV.
7. Potatoes are _______ (cheap) than caviar.
8. They _______ (go) to work by train every day.
9. If my friends _______ (come) with us, we _______ (have) a really good time.
10. We would buy a dog if we _______ (have) a garden.