Topics: Modals of Obligation
Passengers _______ fasten their seatbelts before takeoff. Those who refuse to comply will be escorted out of the plane.
A. might
B. should
C. can
D. must
Select your answer:

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Tenses and Verb FormsModals of Obligation & ProhibitionAdverb of Mannerused to, be used to, get used toPast PerfectPresent Simple/AffirmativePassive Voice and ModalsDEGREE COMPARISONPresent Forms and Narrative TensesAdverb of MannersOther quiz:
Verb Tenses › ViewBy the time we get there, the movie ____ (begin).
A. began
B. begins
C. will begin
Grammar › View
Can he climb a tree?
A. Yes, he can.
B. No, he can’t
