8. Fill in: must or have to.
"Welcome on behalf of Newton Industries. I'd like to explain a few of the factory rules. Mr Newton has said we 1. _______________ wear overalls at all times. He wants us to arrive at 8 am and we 2. _______________ clock in. There is a possibility of working overtime but you 3. _______________ decide whether you want to work extra hours. Mr Newton insists that we 4. _______________ have fifteen-minute breaks every three or four hours but we 5. _______________ choose when we would like those breaks. There is a problem with parking. The city insists we 6. _______________ use the public garage. They believe
parking on the grass is too damaging to public property and I 7. _______________ say I agree. Finally, as far as health insurance is concerned, you 8. _______________ register as soon as possible. Are there any questions?"
/Round-up 6, Virginia Evans/
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9. Complete the following sentences with must not or doesn't / don't have to.
Example A student doesn't have to do extra credit work if he chooses not to.
1. You ___________ use electrical appliances while you are in the bathtub.
2. This homework is optional; you ___________ do it.
3. Students ___________ go on the field trip to the art museum; they can go to the language lab instead.
4. You ___________ make a left turn if there are cars coming from the opposite direction.
5. You ___________ use a pen on standardized tests such as the TOEFL® test.
6. If you drop a class, you ___________ wait until late in the semester.
7. A student ___________ buy a gift for the teacher at the end of the course.
8. Students ___________ attend graduation, but most do.
/From Mosaic 2 Grammar, Patricia K. Werner, John P. Nelson/
10. Underline the correct words. Sometimes both options are possible.
1. In my office you have to / don't have to wear a suit but lots of people do.
2. These pills must not / don't have to be taken if you are under twelve years old.
3. I must / have to leave now because I have a meeting.
4. Notice to all conference participants: Please note that you must / have got to register before entering the conference hall.
5. You mustn't / don't have to smoke inside but you can smoke outside.
6. When I was at university I must / had to write my assignments by hand because there weren't any computers then.
7. British dog-owners have to / must have passports for their dogs when they travel abroad.
8. Next year I'll have to / 'll must get a job to pay back all the money I've borrowed from the bank for my university fees.
/From Cambridge Grammar for IELTS, Diana Hopkins with Pauline Cullen/
11. In the United States, rules of politeness are strictest within certain institutions. A good example is the military. Restate the following sentences, using the affirmative or negative forms of these expressions of necessity: must, have to, have got to, had to.
Example It is forbidden for a common soldier to yell at a superior.
A common soldier must not yell at a superior.
1. It's necessary for soldiers to call officers "sir."
2. It's not necessary for officers to call soldiers "sir."
3. It's forbidden to call officers by their first names.
4. It's not necessary to bow to officers.
5. It's necessary to salute officers.
6. Many years ago, it was necessary for soldiers to treat officers almost like gods.
7. Many years ago, it wasn't necessary for officers to give soldiers any rights at all.
8. Today, it is necessary for soldiers to respect their officers, but it isn't necessary for them to be afraid of their officers.
/From Mosaic 2 Grammar, Patricia K. Werner, John P. Nelson/
12. Complete these sentences with must(n’t) or (don’t/doesn’t) have to (in the correct form).
1. Soldiers ___________ disobey a superior officer.
2. To stay alive, people ___________ breathe oxygen.
3. You ___________ finish your work on this project before you go on vacation. You'll probably lose your job if you don't.
4. If you have an aquarium, you ___________ give your tropical fish too much food or they'll die.
5. To be a successful mountain climber, you ___________ have a great deal of stamina.
6. Thank goodness we ___________ eat fish again tonight. Dad didn't catch any today.
7. You ___________ exert yourself. You're still not fully recovered from your surgery.
8. My room is a mess, but I ___________ clean it before I go out tonight. I can do it in the
morning.
9. We really ___________ help Marge move to her new apartment over the weekend. Not only is it too difficult for one person, but she still has her arm in a sling from her shoulder sprain a week ago.
10. Bill is in the darkroom developing the negatives of the photos he took on his last trip to
P
eru.
You ___________ open the door while he's there because the light
will ruin the pictures.
/Understanding and Using English Grammar, Workbook, Betty Schrampfer Azar/