[ Grammar ]
I knew I ______ the postcard before.
A. had seen
B. have seen
C. seen

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Vocabulary, Grammar, SpellingVerbs � Nouns � Adjectives - AdverbsAdverb Clause ConnectorPunctuationConjunctions, Interjections and DeterminersVerb Tenses and UsageGrammar speak,talk,say,tellVocabulary and IdiomsFormal & Informal WordsModals and InversionOther quiz:
Future Tense › ViewThey … the classroom by the end of the hour.
A. will have been leaving
B. will have left
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Sentence and Fragment › View
Racing for the finish line stretching out her arm to win the race.
A. Complete Sentence
B. Fragment