[ Passive Voice ]
The key ………. to open the door.
A. was used
B. were used
C. was be used
D. were be used
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Simple and Progressive Verb TensesPrepositions of Time, Place, and MovementModals TensesFuture Perfect TenseFamily VocabularyGrammar - direct/indirect objectsPresent Perfect and Present Perfect ContinuousPronouns, Sentence Structure, and ApostrophesPast and Present Continuous tensePresent and Past Simple PassiveOther quiz:
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A. beside
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____ Seoul is the capital of South Korea.
A. a
B. an
C. the
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A. kinetics
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Faraday was the man ________ invented the first electric motor.
A. who
B. what
C. when
D. where