Ways must be found to prevent the poisonous gases on ...

[ Conjunctions and Preposition ]

Ways must be found to prevent the poisonous gases on / from polluting the air.

A. on

B. from

Select your answer:

Random Topics:

Present Continuous Tense Should, Should not have Countable and Uncountable Have to / Do not have to Tenses and Adjectives Reflexive Pronouns & Modal Verbs Transitions Simple Past vs Past Continuous Tense First Conditionals Auxiliary and Modal Verbs

Other quiz:

Grammar › View

In 2050, many people … drive electric car to reduce the pollution.

A. will

B. won’t

C. don’t need to

D. doesn’t need to

Grammar › View

Which is the correct punctuation for the highlighted portion?You may choose to read any two of the following novels The Great Gatsby, Song of Solomon, Sophie’s Choice, The Color Purple, The Ball Jar, and The Invisible Man

A. novels, The Great Gatsby

B. novels: The Great Gatsby

C. novels; the Great Gatsby

D. novels. The Great Gatsby