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

We will reduce air pollution and helped the environment if we use public transportation.

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Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction in each of the following questions.

We will reduce air pollution and helped the environment if we use public transportation.

pollution

public transportation

helped

will reduce

Giải thích

Chọn C