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Must/ musn't should /shouldn’t
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You ____in pen on the answer sheet. You ____ a pencil (write, use))
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Keep left everyone! You ____ (walk) on the left on the stairs
must
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Ypu _____ about the exam. You _____ calm (worry -, be+))
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Where's your swimming cap? You know you _____ (wear it at the pool)
must
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You ____ your work before you finish (check)
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Okay!
No photos. You ____ (take) photos anywhere in the school
Mustn’t
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Okay!
Oops!
Okay!
You _____ all the questions even if you aren't sure about the answer (answer)
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Okay!
You _____ the instructions carefully and you ____ at the example (read +, look+))
Oops!
Okay!
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Okay!
Put your phone in your bag, you know you _____ (use) your mobile phone in class
mustn't
Oops!
Okay!
Shh! You _____ (be) quiet in the library
must
Oops!
Okay!
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