Topics: Modal Verb Gerund or To Infinitive
Passengers ___ smoke until the signs have been switched off.
A. mustn’t
B. can’t
C. needn’t
D. mightn’t
Select your answer:

Random Topics:
Pronunciation and VocabularyPresent Perfect - Just, Already, YetGrammar: MorphologySuperlative AdjectivesPrepositions and Phrasal VerbsSecond and Third ConditionalPast Perfect or Past Perfect Continuous-ing &-ed AdjectivesCountable & Uncountable NounsWh QuestionsOther quiz:
Determiners › ViewI prefer to play soccer ________ I don’t like to play baseball.
A. So
B. And
C. But
D. Because
Present Perfect Tense › View
Have you __________________ your homework yet?
A. did
B. done
C. have done
D. doing
