[ Passive Voice ]
Since the 1970s, computers ________ at a low enough cost to allow individuals to own a personal computer.
A. will be produced
B. have been produced
C. are produced
D. were produced

Random Topics:
Personal PronounsPast Simple VerbsModals and PhrasesPresent Perfect ContinuousSimilesGerunds and InfinitivesPhrase or ClauseNumbersGrammar - Present PerfectPresent Perfect and Simple Past TenseOther quiz:
Grammar › ViewWhich word is not a noun?
A. love
B. dog
C. sky
D. walk
Grammar › View
Nowadays media has a huge influence on the _____.
A. society
B. neighbors
C. Internet
D. school
Perfect Tenses › ViewThe aeroplane ______________ ! Roslan is late again.
A. has take off
B. had took off
C. has taken off
D. have taken off
Grammar › View
Choose the synonyms of the adjective given.
big
A. wide
B. clever
C. enormous
D. kind
