500 Câu trắc nghiệm từ vựng ôn thi THPT QG môn Tiếng Anh có đáp án - Phần 19
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Some of the participating schools have also decided to use green cleaning products, which are safer since they do not ……. harmful chemicals into the environment

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Some of the participating schools have also decided to use green cleaning products, which are safer since they do not ……. harmful chemicals into the environment

release

expose

compound

deplete

Giải thích

Chọn B

A. miễn
B. vứt bỏ
C. pha trộn
D. xả hết ra