Complete the sentences. Use a modal verb and a suitable form of the verb in brackets. (8p)

1.Why did you stay at home? You __ (go) out with us. (possibility)
2. When I got back to my car, the door was unlocked. I __ (forget) to lock it. (certainty)
3. Who was the man we saw with Anna yesterday? I’m not sure. It __ (be) her brother. (probability)
4. Why did you walk? You __ (take) a taxi. (possibility)
5. We went to their house and rang the doorbell, but nobody answered. They __ (go out). (certainty)
6. Where shall we meet tomorrow? Well, I __ (come) to your house if you like. (possibility)
7. I couldn’t find Sophie. She __ (go) shopping. (certainty)
8. When we got to the restaurant, there were no free tables. We __ (reserve) one. (advice)