[ Grammar ]
It is crucial that all members of staff ………………………. with security rules.
A. to be
B. be
C. are

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A. Exclamatory
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Which one is question form of have to?
A. Do/does + S + have to + Verb bare
B. Have to/ Has to + S + Verb bare
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A. television set
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Nobody ______ to take photos in the Louvre museum. It’s forbidden.
A. is allowed
B. should
C. must
D. can
