[ Verb Tenses ]
They ___ at the school concert last year.
A. perform
B. performs
C. performed
D. will perform

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Past Perfect and Past Perfect ContinuousArgumentative VocabularyComparisonUnreal ConditionalsPrepositions after Verbs and AdjectiveSynonym and AntonymAdjectives with -ED and -INGActive and Passive voiceLinking Words and PhrasesPrepositional PhraseOther quiz:
Grammar › ViewShe seems _____ her new job.
A. to like
B. liking
Grammar › View
So much progress….. that there may be space-flights to Mars.
A. Is being made
B. Are being made
C. Will be made
D. Will being made