[ Modal Verbs and Vocabulary ]
They _______ know the answer, but I’m not sure.
A. must
B. might
C. can’t
D. mustn’t

Random Topics:
GerundConjunctive AdverbConjunctions - ConnectorsModals "Should"Degree of ComparisonGrammar (want to/ need to/ have to)Phrase and ClauseAdverb Identification, Function, and FormationGrammar - Place and MovementSentence Structure and PunctuationOther quiz:
Present Simple, Present Continuous or Present Perfect › ViewHe______ (do) his homework at the moment.
A. is doing
B. does
C. has done
Grammar › View
Miranda says there are many _____ in her neighborhood.
A. dog
B. dogs
C. doges
