Exercise 86. Open the brackets using the correct form of the infinitive. Translate the sentences into Russian

1. George must (be) pleased that he has passed his examination. 2. I found this baby bird at the foot of the tree. It must (fall) out from a nest. 3. During the storm, the captain was on the bridge the whole time. He must (be) exhausted afterwards. 4. If Fred left here at four o’clock, he must (be) home by now. 5. I sat on the seat in the park and now my coat is covered with green stripes. The paint must (be) wet. 6. As soon as I switched on my new electric cooker there was an explosion. There must (be) something wrong with it. 7. I don’t know at what time I went to bed last night, but it was late. It must (be) after midnight. 8. Look, the streets are wet; it must (rain) now. 9. He promised to come at six, but he didn’t. He must (forget) his promise. 10. I didn’t hear the telephone. I must (be) asleep. 11. He must (be) careless if he makes such mistakes. 12. The baby woke up when she went into the bedroom. She must (make) noise. 13. The taxi-driver got to the airport in half an hour. He must (drive) very fast.