[ 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 › 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