Đề bài
Đọc kỹ, gạch chân từ khoá trước khi viếtMany students in big cities in Vietnam sleep less than seven hours a night, and this affects their health and their results at school.
What are the causes of this problem? What solutions can you suggest?
Give reasons for your answer and include any relevant examples from your own knowledge or experience.
Write at least 250 words.
