1. MODAL VERBS Ability & Obligation MUST & HAVE TO CAN & COULD

2. MUST and HAVE TO 1. I ____ work from nine to three every day except Sunday. 2. Are you sure we ____ see Aunt Lucy tonight? 3. Sheila ____ go to university on Tuesdays. Tuesday is her day off. 4. I've got a terrible headache. I think I ____ take an aspirin. 5. Let's run. We ____ get home before dark. 6. You look so pale. I think you ___________ see a doctor. 7. It's a pity we ____________work on such a lovely day. 8. We________work even on such a lovely day if we want to finish soon.

3. POSSIBLE SOLUTIONS 1.I have to work from nine to three every day except Sunday. 2.Are you sure we must see Aunt Lucy tonight? 3. Sheila doesn't have to go to university on Tuesdays. Tuesday is her day off. 4.I've got a terrible headache. I think I must take an aspirin. 5.Let's run. We must get home before dark. 6.You look so pale. I think you must/should see a doctor 7.It's a pity we have to work on such a lovely day. 8.We must work even on such a lovely day if we want to finish soon.

4. 9.She ____ take exams at the end of each term. 10. She ____ learn more if she wants to pass the exam. 11. My brother ____ cook meals, he's only a waiter. 12. The room is tidy, you ____ clean it. 13. 'Are you leaving?' - 'Yes, I ____ be at home by now.’ 14. We ____ walk, there's a bus to the hotel. 15. You ____ feed the baby, she isn't hungry

5. 9.She has to take exams at the end of each term. 10. She must learn more if she wants to pass the exam. 11. My brother doesn’t have to cook meals, he's only a waiter. 12. The room is tidy, you don’t have to clean it. 13. 'Are you leaving?' - 'Yes, I must be at home by now.’ 14. We don’t have to walk, there's a bus to the hotel. 15. You don’t have to feed the baby, she isn't hungry POSSIBLE SOLUTIONS

6. CAN and COULD 1.My car has broken down, so I ________________ pick you up from school today. 2.I had a lot of work to do, but I ________________ finish it all in time. 3.How many instruments ________________ you play? 4.________________ you read when you were six? 5.The washing machine isn’t working, and I ________________ repair it. Call a technician. 6.After the operation, he ________________ walk for a week. 7.________________you ride your motorbike with a broken leg? 8.My sister ________________ swim very well, but she is having lessons. 9.________________he delete the virus from the computer yesterday? 10.We ________________ get a good signal in the sitting room. It’s really weak.

7. 1.can’t 2.could 3.can 4.Could 5.can’t 6.couldn’t 7.can 8.can’t 9.could 10.can’t POSSIBLE SOLUTIONS

8. CAN and COULD 11.Cheetahs ________________ reach a speed of 4120 km/hr, but they ________________ keep it up for a long time. 12.Jill ________________ understand Chinese, but she ________________ write it. 13.We ________________ see anything because there was a woman wearing a big hat in front of us. 14.He talked for ages and in the end he ________________ convince us. 15.He was so drunk that he ________________ open the door. 16.Something is wrong with the computer. I ________________ connect to the internet. 17.Why ________________ you help me with my homework? 18.Donald ________________ find a job last week despite the difficult job market. 19.________________ your father play golf well? 20.My son ________________ walk when he was eight months old.

9. 11.can 12.can; can’t 13.couldn’t 14.could 15.couldn’t 16.can’t 17.can’t 18.could 19.Can 20.could POSSIBLE SOLUTIONS