[ Vocabulary ]
water and human waste washed down sinks, showers, and toilets
A. emissions
B. smog
C. acid rain
D. sewage
Select your answer:
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Other quiz:
Grammar › View___________ have you been waiting?’ Only for a minute or two.
A. How far
B. How long
C. When
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Yesterday I went to the mall, …… I bought new things.
A. and
B. but
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