Grammar Quiz
[ Vocabulary ]

The effort that people devote to a task for which they are paid

A. Efficiency
B. Labor
C. Opportunity cost

Select your answer:
A  B  C  D  E 


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AdjectivesTo Infinitive/Bare Infinitive/GerundsPast Simple and Past ProgressiveAuxiliary WordsPresent Simple vs Present ContinuousFuture - Will and Be going toActive and Passive voiceModals and ConditionalsPerfect Verb TensesPresent Perfect Simple & Present Perfect Continuous

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Which words complete this sentence correctly?

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