Too many factories dispose ________ their waste by pumping it into rivers and the sea. A. out B. of C. away D. off

Đáp án B

- to dispose of sth = to get rid of sth: vứt bỏ (rác thải).

Ex: an incinerator built to dispose of toxic waste: lò đốt rác chế tạo để xử lí rác thải độc hại.

- waste (n): đồ thừa, đồ thải.

Ex: household/ industrial waste.

- pump (v): bơm ra, thải.

Ex: The fire department is still pumping floodwater out of the cellars.