[ Vocabulary & Grammar ]
Chemical substances which are pumped into rivers and lakes by factories are known as ____________________.
A. oil spill
B. fossil fuels
C. toxic waste
D. acid rain

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Mixed General Quiz › ViewA person who teaches is a teach___.
a. er
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Choose the correct adverb for this sentence: I haven’t done a parachute jump
A. Already
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I have got ………… crayons in my bag. Shall we paint the picture?
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