[ Vocabulary ]
movement of one object around another object
A. axis
B. revolution
C. season
D. solstice
E. equinox

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Active Voice-Present tensePrepotitionsGrammar TOEFLTenses & PrepositionPresent Simple with Adverbs of FrequencyModals, Infinitives and GerundsGerunds as objects of prepositionQuestion WordsGrammar - Present Perfect TenseAdverbial Clauses of Reason / CauseOther quiz:
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