[ Passive Voice ]
Christopher Columbus discovered America in 1492.
A. America was discovered by Christopher Columbus in 1492.
B. America were discovered by Christopher Columbus in 1492.
C. America is discovered by Christopher Columbus in 1492.
D. America wasn’t discovered by Christopher Columbus in 1482.

Random Topics:
Modals and Semi-ModalsPRESENT SIMPLE - CHILDRENModals AuxiliaryAdverbs of Manner, Likes and PreferencesTenses and ArticleGrammarSubject-Verb AgreementIndefinite and Definite ArticlesLet & Be allowed toPronounsOther quiz:
Grammar › ViewI plan to take my vacation _________ in June _________ in July.
A. whether / or
B. either / or
C. as / if
Second Conditionals › View
If I __________my job, I would apply to join the police.
A. lose
B. lost
C. will lose
D. would lose
Grammar › ViewIt’s a secret. You__________let anyone know about it.A.
A. mustn’t
B. needn’t
C. Mightn’t
D. may not
Grammar › View
They ____________ speak French.
A. don’t
B. doesn’t
