[ Vocabulary ]
The most desirable alternative given up as the result of a decision
A. Marginal
B. Efficiency
C. Opportunity cost

Random Topics:
So / Neither / Either / TooUsed to - Would - TensesPersonal Pronouns and VerbEnglish ArticlePronouns, Sentence Structure, and Figurative LanguagePast SimplePast ParticiplesModals and PrepositionGrammarPresent Progressive TenseOther quiz:
Grammar & Vocabulary › ViewI ________________ in the park yesterday when I saw the wounded cat.
A. stroll
B. strolled
C. is strolling
D. was strolling
Sentence Structure and Pronoun Antecedent › View
Identify the structure of the sentence below.
“Isaac has twins; one of them was Esau.”
A. Simple
B. Compound
C. Complex
D. Compound Complex
Grammar › ViewAdjective or Adverb: In the sentence “He is a fast runner,” what does the word “fast” describe?
A. He
B. Is
C. Runner
Grammar › View
I haven’t _____________ your keys.
A. see
B. seen
C. saw
