[ Grammar ]
He ____ the answer, but he didn’t raise his hand.
A. know
B. knew
C. knowing
D. knows

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Grammar : Structural Common ErrorsAuxiliaries VerbSimple vs Continuous Past TenseModal Verb, Passive VoiceTenses and ConclusionsParts of Speech and GrammarThe Past SimplePresent Progressive TenseParts of Speech and Compound SentencesConjunctions and Verb TensesOther quiz:
Comparative Degree (Adjective) › ViewFew diets are _______than those fi lled with junk food.
A. Worst
B. Worse
Vocabulary › View
Force exerted by every object in the universe on every other object. The amount of force depends on the masses of the objects and the and the distances between them.
A. Unbalanced Forces
B. Force
C. Balanced Forces
D. Friction
E. Gravity
Grammar › View………….’s your name?
A. Who
B. What
Grammar › View
I’d rather you ____________ your books with you. There’s not enough space here to leave them.
A. take
B. took
C. taking
