[ TOEFL ]
The extinct Martian volcano Olympus Mons is approximately three times as _____________ Mount Everest.
A. high
B. high as is
C. higher than
D. the highest of
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Vocabulary and PrepositionsRelative ClausePresent & Past TensesPresent Simple Affirmative and NegativeDefinite and Indefinite ArticlesUnreal ConditionalsNeither/Either/All/NoneThere is, There are, Some, AnyPreposition of DirectionSentence TransformationOther quiz:
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