[ Vocabulary ]
widespread sources of air pollution
A. point source
B. nonpoint source
C. ozone
D. conservation

Random Topics:
Grammar - ConnectorsTenses (Present, Past, Future Forms)Modals and Phrasesmust/shouldUse of Prepositions or ConjunctionsAdverbs of TimeCity PlacesWho vs WhomGrammar / PronounsHelpful PhrasesOther quiz:
Grammar › ViewWhat is the contraction of “it is”?
It is next to the office.
A. its’
B. its
C. it’s
D. it’z
Grammar › View
A: The trash can is getting full.
B: I know. I ______ it out later.
A. I am going to take
B. will taking
Adverbs, Modals, Preposition of time › ViewShe finishes her paper round ________ eight o’clock.
A. at
B. in
C. on
Grammar › View
Choose the type of sentence that describe the sentence below best:
Fall is my favorite season.
_
A. Declarative
B. Interrogative
C. Imperative
D. Exclamatory
