THREATENED 2. POLLUTED 3. DISAPPEARANCE 4. SCIENTISTS 5. DEFENCE 6....
1. threatened 2. polluted 3. disappearance 4. scientists 5. defence 6. completely 7. driving 8. household 9. decision 10. ensure .B.ReadQuestion VI: 10 đ (mỗi câu chọn đúng 1 điểm)