(Viên chức Mầm non) 5000+ câu trắc nghiệm Ngoại ngữ có đáp án - Test 2

Although several methods have been applied, the water seems to be_________

49/65

Although several methods have been applied, the water seems to be_________

less and less polluted

more and more polluted

more polluted than

the more polluted

Giải thích

Đáp án đúng là b