During a class discussion, Abigail mentioned that she had known the answer to a question about the past participle of ‘know’. What is the past participle of ‘know’?
A. knew
B. knowing
C. known
D. knows

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Comparative and Superlative AdjectivesTenses (Present, Past, Future Forms)Adverb & Compound SentencesSynonymsVerb FormsPronouns ( Interrogative )Adverb of MannerWish - beginnerApostrophe GrammarPresent Simple: affirmative, negative, interrogativeOther quiz:
Tenses › View. We ____ a great movie last night.
A. watches
B. watched
C. watching
D. watch
Modal Verbs › View
She probably buys this house next week.
A. She may buy this house next week
B. She must buy this house next week
C. She should buy next house next week.
D. She doesn’t have to buy this house next week.
Tenses and Structure › ViewChoose the correct past simple form: ‘They (to finish) their homework last night.’
A. finish
B. finisheds
C. finishing
D. finished
TOEFL Adjective and Adverb › View
In students’ learning process, academic knowledge, critical thinking, and problem-solving abilities develop . . . .
A. as together
B. and being together
C. together
D. together which
