[ Grammar ]
Li Hong and Li Khai ________ an aeroplane right now.
A. board
B. boarding
C. is boarding
D. are boarding

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ConnectivesAdverbial Clause of Cause and EffectPrepositions and Preposition PhrasesSubject Verb Agreement and Verb TensesDescriptionsOffering HelpPresent simple & ContinuousPronounPronoun-Verb AgreementAdjectiveOther quiz:
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The businessman owes his ____ to his excellent public relations.
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Students _____ listen to the teacher.
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