III. Read the passage and choose the best answer. (2 points) KEEPING OUR TEETH HEALTHY It is very important to have healthy teeth. Good teeth help us
III. Read the passage and choose the best answer. (2 points) KEEPING OUR TEETH HEALTHY It is very important to have healthy teeth. Good teeth help us to chew our food. They also help us to look nice. How does a tooth go bad? The decay begins in a little crack in the enamel covering … Đọc tiếp