[ Grammar ]
I __________(study) for my exams all day.
A. have been studying
B. has been studying
C. has been study

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Grammar - could / could notPast PassiveConditional Sentence Type 2Argumentative VocabularyModals VerbsSimple and Continuous TensesPersonal & Possessive PronounsPresent Simple or Present ContinuousModal Verbs and Gender NounsFrequencyOther quiz:
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A. will be
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A research method that involves conducting observations and collecting data in a natural setting.
A. field study
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A. have
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The floors must ____ cleaned as soon as possible.
A. being
B. been
C. be
