Put the verbs in the correct form.
1. I ____ to Germany tomorrow on business. (go)
2. We're exhausted. We ___ all day. (study)
3. I'll phone as soon as I ___ home. (get)
4. My parents don't let me ___ out late during the week. (stay)
5. A. I'm cold.
B. Are you? I __ the central heating. (turn on)
6. We get on very well. We __ friends for nearly ten years. (be)
7. When I arrived, the flat was empty. Everybody ___. (go)
8. I __ sell my flat yet but I'm still trying. (not be able to)
9. It would be quicker if we __ her an e-mail. (send)
10. He ran out of the restaurant without __ the bill. (pay)