[ Prepositions of Time ]
History is the study of events that occurred __ the past.
A. in
B. on
C. at
D. of

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Adverb of TimeLinking Words & PhrasesDegrees of ComparisonZero and First ConditionalsGrammar / Pronouns1st ConditionalTenses of VerbsCommon Grammar Mistakes and Spelling TipsAsking and Giving OpinionGerund Subject or ObjectOther quiz:
Prepositions › ViewI saw him walking ___ the direction of the station.
A. In
B. To
C. By
Grammar › View
Is Mark _____ to Greece this year?
A. going
B. gone
C. go