[ Modal Verb ]
Passengers ___ smoke until the signs have been switched off.
A. mustn’t
B. can’t
C. needn’t
D. mightn’t

Random Topics:
Prepositions and Phrasal VerbsWish / If only ( Present)Commas and Subordinating ConjunctionsBasic GrammarModal Verbs & Time PrepositionsComparativePronoun Antecedent AgreementIntermediate PrepositionsInterjections, Tag Questions and Nouns of Direct AddressVerb Tense, Pronouns and AntecedentsOther quiz:
Present Simple › ViewCarlos and Charles ______________ ( not travel) every year.
A. doesn´t travel
B. don´t travel
C. travels
Grammar › View
While they ___ (organize) the orientation, the new employees waited in the lobby.
A. organize
B. organizing
C. were organizing
D. organized
Modals of Probability › ViewIt’s got four legs, so it ……………….. be a snake.
A. could
B. can’t
Few vs. Little › View
Did you take ______ photos when you were away on holiday?
A. Much
B. Many
C. Few
D. Little
