[ Tenses ]
They _____ playing tennis now.
A. is
B. are
C. am
D. be

Random Topics:
Past Simple VerbsSynonymTenses and ArticlePresent simple, Present continuous, Singular, PluralActive vs. Passive VoicePast and Present TensesMix-TensesModals and Past ModalsComparison of Adjectives and AdverbsSentence StructureOther quiz:
Grammar › ViewYour work is _______ (good) than mine.
A. Gooder
B. Better
C. Beter
Grammar › View
Choose the word whose underlined part differs from that of the other three in pronunciation.
A. breadwinner
B. clean
C. team
D. meaning
Grammar › ViewHe speaks English ____________ (good).
A. best
B. better
C. goodly
D. well
Grammar › View
__________ there fifty-two weeks in a year?
A. Is
B. Was
C. Are
D. Were
