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8. It's dangerous. You ................... touch that wire.
9. You ....... ........ be rude to your teacher.
10. In the class, you .................. study hard.
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Exercise 7. Circle the best answers.
1. We (must / musts) learn English.
2. The dogs (mustn't/ don't must) bark at night.
3. You and your friends (must / must to) do more exercise.
4. Mr. Henry hasn't got much time. He (must / doesn't must) hurry.
5. That car is very important. You must (look/ looking) after it very carefully.
6. The event (must/ is must) have been wonderful yesterday.
7. Tommy (mustn't/ not must) park here.
8. Anna mustn't (go/ goes) on the left of the streets.
9. My baby is asleep. You (haven't / mustn't) shout.
10. She told me everything. So, I mustn't (tell / telling) anybody else.
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