[ Grammar ]
It is _____ proven that electrons have a negative charge.
A. scientifically
B. scientific
C. scientist
D. science
Select your answer:
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Inversion + Passive Voicelike/do not likeModals: Possibility, Necessity, ExpectationAdjectives with PrepositionNoun, Verb, AdjectiveConjunctions, Interjections and DeterminersCountable and UncountableHomophone & HomonymPrepositions Of Place
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Vocabulary › ViewTo be protected from disease is to be _____.
A. an investment
B. unfamiliar
C. immune
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I’m going to keep asking you to marry me _____ you say “Yes”.
A. while
B. when
C. until
D. before
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