[ Grammar ]
They ________ be very happy. They never stop smiling.
A. can
B. must
C. can’t

Random Topics:
Simple Present and Present ContinuousPassive Voice with Modal VerbsPresent Tenses and ConnectorsComparison of Adjectives and AdverbsPresent Simple & Present ContinuousPrepositionFuture Simple TensesComparativeIELTS VocabularyPerfect TensesOther quiz:
Grammar › ViewAbdullah _____ answer his phone.
A. isn’t
B. aren’t
C. didn’t
D. hasn’t
Grammar › View
I don’t have _____ of money, so I need to budget.
A. a lot
B. allot