[ 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
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Suffixes and TensesTo Infinitive/Bare Infinitive/GerundsAdverb ClausesVerb Tenses and ModalsGerund NounStative Verbs and TensesGerund, Participle, Infinitive, or AppositiveModal and Relative PhrasesAction VerbSpellingOther quiz:
Describing Words › View
I have a rabbit. The color of my rabbit is _______________.
A. black
B. red
C. white
D. pink
Independent and Dependent Clauses › View
What is the subordinating conjunction?
I will finish my homework after the movie is over.
A. finish
B. homework
C. after
D. over