Must, have to, had to

must
have to
has to
had to
1. We …………… obey the rules of Antarctica.
must
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must
have to
has to
had to
2. We …………… catch a lot of fish to survive.
have to
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must
have to
has to
had to
3. Yesterday I …………… repair my house.
had to
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must
have to
has to
had to
4. I …………… go and find some food.
must
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must
have to
has to
had to
5. We …………… go to the North yesterday.
had to
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must
have to
has to
had to
6. He …………… help me with the repair but he doesn’t want to do it.
has to
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mustn’t
don’t have to
doesn’t have to
didn’t
have to
7. You …………… swim here. it’s too cold.
mustn’t
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mustn’t
don’t have to
doesn’t have to
didn’t have to
8. He ………………… help me with the repair if he doesn’t want it.
doesn’t have to
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mustn’t
don’t have to
doesn’t have to
didn’t have to
9. I ………………… repair my house last week.
didn’t have to
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mustn’t
don’t have to
doesn’t have to
didn’t have to
10. We ………………… go to work.
don’t have to
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mustn’t
don’t have to
doesn’t have to
didn’t
have to
11. We …………… eat sausages.
mustn’t
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mustn’t
don’t have to
doesn’t have to
didn’t have to
12. We ………………… fly to catch fish.
don’t have to
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