‘For 20 years’ is a signal word for the ..
A. past simple
B. present perfect
Modal Auxiliary VerbDespite, In Spite Of, Although, Even Though, HoweverToo / Very / SoWho vs WhomEssential and Nonessential ClausesGrammar - Verb FormsPreposition and Preposition PhraseArticles and DemonstrativesSimiles
Other quiz: Grammar
We _______ thousands of trees if we _______ so much paper.
A. save – won’t waste
B. will save – don’t waste
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