[ Passive Voice ]
Gold_________ in California in the 19th century.
A. was discovered
B. has been discovered
C. was discover
D. they discover

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Modals of Obligation & ProhibitionOffering HelpTypes of Sentence StructureTenses UsageWh- Questions Present Simple TenseFinite and Non-Finite VerbPassive Voice with ModalsFuture - Will and Be going toDefinite vs Zero Article Abstract NounsRelative Clauses and Past PerfectOther quiz:
Tenses › ViewSelect the sentence that correctly uses the past simple tense.
A. They visited the museum last week.
B. They have visited the museum last week.
C. They are visited the museum last week.
D. They visits the museum last week.
Passive Voice › View
A price…… To whoever solves this equation.
A. Is given
B. Gives
