----- Nội dung ảnh ----- Bài 4 Gạch chân lỗi sai trong các câu sau và sửa lại cho đúng. 1. Many people think that the lead is the heaviest metal. 2. Young people are always open-minded than old. 3. The windows are supposed to let in natural light. 4. The most of the students in our class comes from Hanoi. 5. Do you know that Alps are the most extensive mountain range system?
