[ Vocabulary ]
the quality of being able to be used or obtained
A. energy conservation
B. fossil fuels
C. human impact
D. sustainability
E. availability
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Verbal CommunicationPast Tense and Perfect TenseModals - Have to or ShouldAdverbial Concession ClausesTenses and StructureAdverbs by TypeGrammar ElementaryNouns, Pronouns, Antecedents, and Singular and PluralAdverbs of How Something is DoneVocabulary and TensesOther quiz:
Relative Pronouns and Adverbs › ViewThis is my teacher, ______ you met at open house.
A. that
B. whom
C. which
D. whose
Grammar › View
The possessive pronoun for he is
A. its
B. her
C. his
D. their
Grammar › ViewI told my teacher I _______________ my homework the day earlier.
A. did
B. had done
C. have done
D. do
Verb Tenses › View
Fill in the blank with the correct form of the verb: ‘He ________ (play) the guitar every day.’
A. playing
B. play
C. played
D. plays