[ Vocabulary ]
We need to ____________________ there is no copying in the research report.
A. examine
B. enhance
C. empower
D. ensure

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Subject Verb Agreement and Verb TensesPast Perfect and Past Perfect ContinuousConjunction and PunctuationModal Possibilities-ed or -ingPronouns of QuantityVOCAB & GRAMMARAlong & AgainstModals and Adjectives (ed-ing)Grammar Comma UsageOther quiz:
Grammar › ViewMobile phones were invented _______ the 20th century
A. at
B. in
C. on
Grammar › View
She _____ never _______ horror movie
A. has liked
B. have liked
C. liked
