[ Modal Verb ]
All passengers ___ turn off their mobile phone.
A. shall
B. must
C. must not
D. may not

Random Topics:
Verbal and Appositive PhrasesAdverbs (manners & modifiers)Prepositions after Verbs and AdjectiveNoun / PronounGerund Noun-Ing and Infinitive Verb PatternsSimple Present Tense with Adverb of FrequencyAdverbs of DegreeVOCAB & GRAMMARVerb Forms and PrepositionsOther quiz:
Question Tags › ViewI am mad at you. Don’t talk to me, … ?
A. shall you
B. do you
C. will you
D. are you
Grammar › View
A : Was it fun at the party?
A. Yes, it wasn’t.
B. Yes, it did.
C. No, it wasn’t.
D. No, it didn’t.
