III. Complete with the correct form of the verb in brackets.

Solution:

1. I was working in a café when I met Melissa for the first time.
2. Jenny didn't watch TV when I phoned her.
3. I am thinking my new T-shirt is made of cotton.
4. Sam is playing golf at the moment.
5. There were not any computers when I was a boy.
6. Yesterday at three o'clock I was sitting on the sofa watching TV.
7. Potatoes are cheaper than caviar.
8. They go to work by train every day.
9. If my friends come with us, we will have a really good time.
10. We would buy a dog if we had a garden.