The scientific study of rocks, including petrography and petrogenesis.
Home vs. House Noun ClausePronoun Adjectives vs AdverbsModal Verbs and ConditionalsAction, Helping & Linking VerbsVerbs: Will & Going toComparatives - SuperlativesHas Got & Have Got
Other quiz: Future Tense
By the time my grandson is grown up, they _______ all the trees in the local forest.
A. will have cut down
B. will cut down
C. are going to cut down
D. will be cutting down
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