[ 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:
Grammar: is/are/was/wereUsed to & would & Past SimpleHas and HaveSimiles, Metaphors, Personification and HyperbolePronouns and Subject Verb AgreementFirst Conditional & Future TensesInfinitives and ING FormsPassive Voice, Modals of Deduction and First Conditionaltake, make, doHow often - long - much - manyOther quiz:
Modal Auxiliaries › ViewA: Where’s Tracy? I’ve been looking for her all morning.
B: I haven’t seen her. She _____ be sick.
A. can
B. can’t
C. might
D. might not
Interrogative Pronoun › View
… made this delicious cookies?
- Whatever
- Whichever
- Whoever
Grammar › View
She finished ______ her project at 10pm last night.
A. to do
B. doing
Vocabulary › View
What does “reluctant” mean?
A. Unwilling or hesitant to do something
B. Very eager and excited
C. Completely certain about something
D. Very happy and satisfied