Most of the wastes from factories are ________ They are ________ our environment. A. poisonous / poisoning B. poison / poisoned C. poisonously / poisoned D. poisons / poisoner
Most of the wastes from factories are ________ They are ________ our environment.
A. poisonous / poisoning
B. poison / poisoned
C. poisonously / poisoned
D. poisons / poisoner