Choose the best answer to complete the blank in each of the following sentences.
The air has become more and more polluted because of exhaust fumes from vehicles.
preserved wasted contaminated conservedMôn học
Chủ đề / Chương
Bài học
Chủ đề
Choose the best answer to complete the blank in each of the following sentences.
The air has become more and more polluted because of exhaust fumes from vehicles.
preserved wasted contaminated conserved
