[ Sentence Transformation ]
I am pretty sure Dan is at home because the lights are on
A. Dan may be at home because the lights are on
B. Dan needn’t be at home because the lights are on.
C. Dan can’t be at home because the lights are on
D. Dan must be at home because the lights are on

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Grammar - Present Perfectlike/do not likeComparison of Adjective and AdverbSuch...that, so ......thatPresent Simple and Present ContinuousPrepositions of Place and TimePronouns and AdverbsPast Perfect Simple TenseSentence CompletionPast Simple TensesOther quiz:
Grammar › ViewA sustainable forest is a forest where trees that are cut are replanted and the wildlife is protected.
A. pre-tested
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Goer, Inc., has been conducting a quality improvement campaign ——- the past six months.
A. by
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Mary bought a gift for her mom, and the store clerk gift wrapped it.
A. simple
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What school ______he go to?
A. did
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