[ 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:
Conjunctions › ViewYou must start at once; _______ you will be late
A. however
B. otherwise
C. moreover
D. further more
Grammar › View
They ________ (not have) a house of their own.
A. didn’t use to have
B. didn’t used to have
C. wouldn’t have
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
