Ex. 8. Put "can”, ”may", "must", "should", "ought to", "have to", "be to", "be able to” (or the negative forms) and "needn't" in the spaces. 1."Oh, Nurse, ...I stay here?" "Stay here? Of course, you...".2. A man ...help his parents when they become old. 3. There are no buses or taxis, so we ...walk. 4. No, Moira you ...have another potato. You've had two already. 5. We ... live without food and water. We ... eat and drink. 6. I ... get too early tomorrow, so I .... go to bed late tonight. 7. You ...not walk all the way to the station. You take a bus round the corner. 8. Tom's father told him that he .... ask silly questions. 9. You switch off the light if you are afraid of the dark. 10. The matter ...be discussed in tomorrow's debate. 11. You ... sit there in your wet clothes; you will catch cold if you do. 12. They ... do all the exercises; it will be sufficient if they do four of them, 13. You ... do whatever you like. 14. Sooner or later one ... choose. 15. I ... read to the end of the story, because I want to see who gets the treasure. 16. Go right in. You ... report at once. 17. She ... sing quite well. 18. You ... say anything. Just nod your head and he will understand.
Ex. 9. Put "should" or "shouldn't" inthe spaces. Translate the sentences into Russian. Watch the meaning of "should"/"shouldn't". 1. You ... work more; you ... miss the lessons. 2. Mother ... look after their children. 3. What are you doing here? You be in bed. It is very late. 4. That hat doesn’t suit you; you ... buy another. 5. There are too many accidents. Everyone ... be much more careful, 6. You ... have followed the instructions of your coach. Then you would have won the game. 7. Tom was often late and his father told him that he ... wake up earlier. 8. She told her children that they... always say "Please" and "Thank you". 9. It is dark in the room, ... switch on the light.
Ex.10. Open the brackets using the correct form of the infinitive. Translate the sentences into Russian. 1. I don't feel well now. I should (remember) to take the medicine yesterday. 2. Children should (obey) their parents. 3. It's three o'clock and I'm feeling very hungry; I should (eat) more for lunch. 4. The little boy was playing with his father's typewriter and of course he broke it; he shouldn't (allow) him to play with it. 5. You have a weak heart. You shouldn't (run). 6. I was very tired last summer and I should (take) a holiday, but there was too much work to do. 7. When he went for a walk he should (take) his umbrella, it looked like rain (but he didn't). 8. The workmen are very slow; the job should (finish) a week ago. 9. You shouldn't (eat) so much bread, now you've gained weight. 10. You shouldn't (go) out yesterday without a coat. No wonder you caught cold. 11. You should (cross) the road by the subway (but you didn't). 12. He should (check) that his brakes were working properly (but he didn't). 13. You should (warn) him that the ice was dangerous (but you didn't). 15. Tom's had another accident. It sounds like Tom's fault. He should (wait) till the main road was clear.