[ Grammar and Vocabulary ]
Most of the air pollution results _____ the burning of fossil fuels, motor vehicles, factories, aircraft and rockets.
A. in
B. to
C. on
D. from

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The Simple Present TenseProgressive TenseAdverbial Concession ClausesPresent and Past Simple TenseMaritime Vocabulary and GrammarPresent Tenses: Simple vs ContinuousGrammar for IELTSVerb Types and Tensesas...as, comparatives, superlativesVerb 3 formsOther quiz:
Tenses › ViewThose houses in Idjen Boulevard ….. either mine or hers.
A. hasn’t
B. aren’t
C. is not
D. wasn’t
Present Simple and Continuous Tense › View
He _____ right now, don’t make a noise.
A. sleeps
B. is sleeping
C. sleep
