throw/ environment/ If/ pollute/ will/ you/ it/ the/ the rubbish.

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If it throw the rubbish, you will pollute the environment.

If you will throw the rubbish, it pollute the environment.

If you throw the rubbish, it will pollute the environment.

If it pollute the environment, you will throw rubbish.

Giải thích

Đáp án C

Giải thích: câu điều kiện loại 1: “If + S V(s/es), S + will V”

Dịch: Nếu bạn vứt rác, nó sẽ gây ô nhiễm môi trường.