[ Modals of Obligation and Necessity ]
Which sentence means something is optional?
A. You don’t have to wear a uniform.
B. Managers have to approve requests.
C. Workers mustn’t eat at their desks.
D. Employees must arrive on time.

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Adjective or Adverb › ViewBuses are not so … as taxis.
A. more expensive
B. expensive
C. the most expensive
D. a more expensive
E. expensivest
Modal Verbs › View
Which sentence correctly rephrases ‘Perhaps he will be home soon’ using a modal verb?
A. He must be home soon.
B. He could/may/might be home soon.
C. He should be home soon.
D. He will be home soon.