We must be quite in class.
Tom, you mustn’t (must not) climb on your desk.
You mustn’t (must not) drop litter.
We must wear a uniform.
1)must
2)must not
3)must not
4)must
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We must be quite in class.
Tom, you mustn’t (must not) climb on your desk.
You mustn’t (must not) drop litter.
We must wear a uniform.
1)must
2)must not
3)must not
4)must