[ Grammar ]
They _ playing tennis.
A. isn’t
B. aren’t

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Nouns, Articles, DeterminersMay, MightGrammar and PunctuationPast Simple & Past ContinuousSecond Type ConditionalFamily Vocabulary and GrammarVerbal CommunicationLinking VerbModals, Infinitives and GerundsFuture PassiveOther quiz:
Tenses › ViewIdentify the tense in the following sentence:
What is the time by your watch?
A. Simple Future
B. Present Continuous
C. Simple Past
D. Simple Present
Past Tenses › View
We … finished doing the homework
A. had
B. was
C. were