[ Vocabulary and Grammar ]
. Why does the author compare space exploration to the Lewis and Clark journey?
A. to describe how the explorations were different
B. to give an example of earlier space explorations
C. to show that explorations are dangerous
D. to demonstrate the idea that space exploration brings opportunities
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Grammar and PunctuationVerb Moods and Vague PronounsNouns as AdjectivesUnreal Uses of Past TensesPresent Simple & Present Continuous TensesPreposition of TimeIrregular AdjectivesModals and Comparative SuperlativePassive Modals in Different TensesNarrative, Past TensesOther quiz:
Adjectives and Adverbs › ViewIdentify the adverb: “The day was extremely cold.”
A. day
B. was
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Grammar › View
A _______ is the general name used for persons, places, animals, or things of the same kind.
A. common noun
B. proper noun
C. abstract noun
D. collective noun