[ Modals ]
We use: mustn’t when we talk about ( …)
A. necessity.
B. obligation
C. no obligation
D. prohibition

Random Topics:
Present Perfect - Just, Already, YetCountable & Noncountable NounsMay, MightCoherent Sentence with Correct Grammar StructureModal AuxiliaryAdverb of MannersPrepositional PhrasesModals and InversionSo - Too - Either - NeitherPast TenseOther quiz:
Grammar › ViewChoose the correct form of the verb to complete the sentence.
Everyone ______ to speak at the meeting.
_
A. has
B. have
as...as, comparatives, superlatives › View
It’s ______ film I have ever watched.
A. best boring
B. the best boring
C. the most boring
Grammar › ViewWhat do you think I … do?
A. should
B. should to
C. should be
Countable - Uncountable › View
His politics ___ inspired by the greatest kings.
A. was
B. were
