[ Question Tags ]
Scientists study climate changes,
A. Aren’t they?
B. Do they?
C. Don’t they?

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Indefinite and Intensive NounVerb PhrasesPunctuationVocabulary : Coming & GoingMixed ConditionalVerb AgreementPossessive Nouns with Apostrophes and PronounsCompliment, Congratulation, and HopeAdverbial ClausesVerb, Object, PrepositionOther quiz:
Tenses › View. Apply future perfect tense: By the end of this month, they (to finish) the project.
A. By the end of this month, they will finish the project.
B. By the end of this month, they have finished the project.
C. By the end of this month, they finished the project.
D. By the end of this month, they will have finished the project.
Gerunds & Infinitives + Vocabulary › View
This music is too ……………. . I can’t hear anything.
A. soft
B. shiny
C. rotten