[ Vocabulary ]
The cost of producing one more unit of a good
A. Interest
B. Productivity
C. Marginal
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Parallel Structure or Combining SentencesAuxiliaries VerbAdjectives and VocabularyAnalogyas...as, comparatives, superlativesAdverbs and AdjectivesRelative Clauses PronounsRequest with Modal VerbsTypes of SentencesConditionals and WishesOther quiz:
Tenses › ViewThe boys __________________ in the garden when they __________________ their father’s steps. (WORK, HEAR)
A. had worked – heard
B. were working – heard
C. had been working – heard
D. are working – heard
Article › View
He eats …apple daily.
A. A
B. The
C. An
D. X