[ Modals of Prohibition ]
We have a lot of work tomorrow. You ___ be late.
A. mustn’t
B. don’t have to
C. doesn’t have to

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Gerund and Infinitive › ViewThe medical authorities warned everyone ……….. the water without first …………. it.
A. not to drink/boiling
B. not drinking/to boil
Vocabulary › View
A combination of two or more transformations
A. Set
B. Preimage
C. Composition
D. Reflection
