Grammar Quiz
[ Vocabulary ]

__________ is mainly caused by waste gases that come out of vehicles, machines or factories.

A. Water pollution

B. Air pollution

C. Noise pollution

D. Soil pollution

Select your answer:
A  B  C  D  E 


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Grammar (Possessive Pronouns)Verbs with Prepositions and ConjunctionsModals, Infinitives and GerundsAsking & Giving AttentionContrastive ConjunctionsConditional 0Adverbs of Time and PlacePhrasal VerbsBasic TensesPresent Perfect & Past Simple Tense

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