[ Subject-Verb Agreement ]
A number of teenagers __________ playing on the playground.
A. Is
B. Are

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Who am I?Conditional TypesOrdering AdjectivesSynonymModal "Have to"Phrasal VerbGrammar & TensesGrammar: Defining Relative ClausesQuestion TagModals in the Past - Speculation and DeductionOther quiz:
Vocabulary › ViewWhat are ‘Platitudes’?
A. Statements that have been used too often to be interesting or thoughtful.
B. Nearness in space, time, or relationship.
C. Morally correct behavior or thinking; righteousness.
D. The acceptance of something undesirable but inevitable.
Verb Phrase › View
I can understand his concern.
A. I’m concerned
B. his concern
C. can understand
D. I
Gerunds and Infinitives › ViewI know you don’t want to, but please try _____talk to him.
A. to talk
B. talking
Present Perfect Tense › View
They _______10 cars so far.
A. have have
B. have had
