[ Grammar ]
Which sentence contains an incorrect verb form?
A. He is sleeping right now.
B. They are playing outside.
C. She is knowing the answer.
D. I am watching TV at the moment.
E. We are waiting for the bus.
Select your answer:

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Essential and Nonessential Clauseswas wereVerbs – Nouns – Adjectives - AdverbsAdverbs or AdjectivesThe Present Progressive TensePresent, Past, Present Perfect and ComparativeVerb Tenses and SubordinatesModals and Modal PerfectsAdverbs (manners & modifiers)Modals of Speculation and DeductionOther quiz:
Have to › ViewThey have ……… sweep the floor.
A. does
B. do
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Grammar and Sentence Structure › View
Choose the sentence that contains a compound preposition:
A. She lives across the street.
B. He ran after the thief.
C. We met in spite of the heavy rain.
D. They waited outside the cinema.
