----- Nội dung ảnh ----- Exercise 15: Rewrite the sentences using double comparison. 1. Students become more nervous as they get closer to their exams. 2. As I look after more cats every day, it becomes more expensive to supply cat food. 3. You’ll become more fluent if you write more. 4. When computers get smaller, they are harder to afford. 5. Days get longer. Therefore, we’ll get more sunlight. 6. People become more independent as they grow old. 7. If I spend less, I’ll save more money. 8. When you have more time, you can do more work. 9. I have more and more exams these days; so, I get more tired and sleepless. 10. If you travel more, you will know the world better.