1. The living standard in the USA is higher than Viet Nam, which is kind of sad. 2. I was trying to make a good impression to a boy, but ended up leaving him with the wrong impression. 3. My tests serve no purpose rather than to improve your English language skills. 4. I think he didn't go to school anymore, didn't I? 5. The coal is the world's most abundant fossil fuel. 6. Copyright law stated that you have to have the permission of the authors or the publishers before copying their work. 7. Which of these two books that you prefer more? Old Man and the Sea or Anna Karenina? 8. The book is well-written, except a few mistake in spelling. I would read it when I have a chance. 9. Today is a special day so we'll paint the town pink. 10. Having not completed the assigments, she decided to go to bed.