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

Random Topics:
Preposition & Relative ClausesAuxiliary WordsGrammar MistakesPrepositionGerund or InfinitiveWh QuestionsQuantifies and Modals of DeductionApostrophe GrammarMixed ConditionalsPresent Simple Positive and NegativeOther quiz:
Grammar › ViewI want to buy the mobile phone ______ I showed you last week.
A. which
B. whose
Vocabulary › View
A person who opposes official policy, especially that of an authoritarian state.
A. dissident
B. arid
C. disapprove
D. wary
