Câu 1. The river water is severely polluted, mostly________ the dumping of raw sewage. A. due to B. lead to C. because D. so Câu 2. Choose the word wh
Câu 1. The river water is severely polluted, mostly________ the dumping of raw sewage. A. due to B. lead to C. because D. so Câu 2. Choose the word whose underlined part is pronounced differently from the others. A. disease B. dead C. treatment D. sneeze Câu 3. Sudden changes in water temperature can ________ … Đọc tiếp