ADMICRO

Mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions.

If wastes are thrown ____________, they can cause pollution in water, land and air.

Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án

ZUNIA12
ZUNIA9
AANETWORK