Grammar Quiz

[ 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 › View

They __________ (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

How to use : Read the question carefully, then select one of the answers button.