1. When______he______his hair cut?г. did get№ 2. He______ write in German, but he______ to speak the language fluently. He______ to listen to many tapes ______ to understand native speakers when he ______ to work in Germany.в. can, isn't able, '11 have, to be able, has№ 3. ______ I come in? — No, you______ because the bell has already rung. But you______ join us after the breakг. may, mustn't, may№ 4. The plane to Boston______ to take off in 15 minutes. ______ you do me a favour? ______ I pass through the Customs without checking my suitcase? I'm sorry you______. All passengers______open their suitcases.а. is, could, may, may not, must№ 5. – ________ I help you? – Please, do. I ______ shut the door. The lock ______ be out of order. Yesterday I______ lock the door either and I______ to ask for helpб. can, can't, must, couldn't, had№ 6. Yesterday I______to do my homework late at night because previously I______ to go to the library to look through some necessary material. Only then I______ proceed to home assignments. I______ to do all of them, since I was tired. But the next day I______ do everything early in the morning.б. had, needed, could, wasn't able, could№ 7. – I wonder if my son______ to stay after classes tomorrow in case he gets a bad mark? – I'm sure he______ to do this because he______extra classes.г. will have, has, needs№ 8. When we went to the forest, we______smell burningв. could№ 9. She was speaking in a very low voice, but I______understand what she said.г. could№ 10. I do not know when they will be here. They______arrive any time.в. can