[ 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
Random Topics:
Grammar (Possessive Pronouns)Verbs with Prepositions and ConjunctionsModals, Infinitives and GerundsAsking & Giving AttentionContrastive ConjunctionsConditional 0Adverbs of Time and PlacePhrasal VerbsBasic TensesPresent Perfect & Past Simple TenseOther quiz:
Subject Verb Agreement › ViewNeither the students nor the teacher _______ (be) in the classroom.
A. is
B. are
C. were
D. was
Vocabulary › View
A book of synonyms, often including related and contrasting words and antonyms.
A. thesaurus
B. subject
C. propaganda
D. dictionary
Kinds of Nouns › ViewPacific Ocean
A. Common Noun
B. Proper Noun
C. Collective Noun
D. Abstract Noun
Grammar › View
A. eye
B. grandparents
C. mouth
D. brother