III.GRAMMAR PRACTICE
How to express obligation?
Exercise 10. Fill the gaps in the sentences with must(n't), needn't or should(n't). be to 1. We've run out of paperclips. I.................. get some more in the morning. 2. You............................. finish that report tonight if you're too tired. Midday tomorrow is the deadline. 3. What are you doing here?.................... you be at the meeting downtown? 4. He really........................... have told his brother about this deal. It was supposed to be absolutely confidential. 5. You clean the office because we haven't been using it today, but could you tidy the shelves in the storeroom, please? 6. You............................. make so much noise. We'll be asked to leave otherwise. 7. I'm going to be in trouble. I.................... to post these letters yesterday afternoon and I completely forgot. 8 You.............................. have typed this - a handwritten note would have been quite adequate. 9. The meeting's finished. We……find out what's been decided. Exercise 11. Complete the second sentence using the correct form of must, need, should or have to without changing the meaning. E.g.It is vital to wear a helmet when you ride a motorbike. You must wear a helmet when you ride a motorbike. 1. I expect we'll get the contract because we offered the best price. We offered the best price so we............................................
2. It isn't necessary for us to spend a long time in the museum if it's not interesting.
3. It was wrong of you to speak to my mother like that. You.......................................................................................
4. She promised to phone me before lunch. It's seven o'clock now. She…………………………………………………by now.
5. I made far more sandwiches than we needed. I……………………………………………so many sandwiches.
6. It's essential that my father doesn't find out what I've done. My father................................................................
7. In my opinion it would be wrong for them to leave the house now. I don't think they.....................................................
8. My sister offered me a lift so it wasn't necessary for me to call a taxi. As my sister offered me a lift…………………………………… Exercise 12. Match the two halves of these sentences. 1. She should be working 2. She shouldn't stay in bed all day 3. She shouldn't have fallen asleep 4. She mustn't oversleep 5. She doesn't have to get up yet 6. She didn't need to rest 7. She needn't have set the alarm clock a when she was supposed to be working. b because she woke up early anyway. с but she's too tired. d or she'll miss her interview. e unless she's ill. f if she's not going to work today. g because she wasn't feeling tired.
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