Bộ 3 Đề kiểm tra Unit 8 - Tiếng anh 10 iLearn Smart World có đáp án (Đề 2)

Air pollution leads ______________ global warming and many health problems.

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Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Air pollution leads ______________ global warming and many health problems.

up to

to

on

into

Giải thích

Chọn B