ADMICRO

Write the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correcting.

In the 1960s, hardly anyone was concerned to the pollution of air, water, and land.

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

ZUNIA12
ZUNIA9
AANETWORK