[ Vocabulary ]
widespread sources of air pollution
A. point source
B. nonpoint source
C. ozone
D. conservation
Select your answer:
Random Topics:
Adjective HomophonesDegrees of ComparisonGrammar MistakesAdverbial ClausePresent and Past Simple TenseLexico and GrammarAdverb of MannerSentence Structure and Conjunctions
Other quiz:
Present Simple and Continuous Tense › ViewThey __________ (work/working) on their project at the moment.
A. work
B. working
C. works
D. are working
Prepositions › View
What he said was contrary _________ common sense.
A. for
B. about
C. to
D. of
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