[ Passive Voice ]
The key ………. to open the door.
A. was used
B. were used
C. was be used
D. were be used

Random Topics:
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:
Subject Verb Agreement › ViewA crocodile — slowly in the swamp.
A. swims
B. swim
Future Perfect Continuous Tense › View
Your children … paintball in my back yard for more than two hours by the time you pick them up.
A. will have been playing
B. will have been being playing
Earthquake waves travel slowly through the hotter parts of the ______ and speed up in colder, denser areas.
A. kinetics
B. mantle
C. lipids
D. latitude
Grammar › View
Faraday was the man ________ invented the first electric motor.
A. who
B. what
C. when
D. where
