II. Read the passage and choose the right answer. It is very important to have (1) ………. teeth. Good teeth help us to chew our food. They also help us
II. Read the passage and choose the right answer. It is very important to have (1) ………. teeth. Good teeth help us to chew our food. They also help us to look nice. How can we keep our teeth healthy? First, we have to go to a dentist (2) ………… a year. Second, we should … Đọc tiếp