4. If he were not so thin, he would not feel the cold so much.
5. She has lived in that house since 1989.
6. It's been ten years since they last saw their uncle.
7. He suggested that we should go and have a look at the cathedral.
8. Would you mind if I opened the window?
9. I used to go swimming every Thursday when I was at school.

4. If he weren't thin, he wouldn't feel the cold so much.
5. She has moved into that house since 1989.
6. It's ten years since they saw their uncle.
7. He suggested going and having a look at the cathedral.
8. Would you mind if I opened the window?
9. I used to go swimming every Thursday when I was at school.