1. C
(A. thay thế, B. bù lại/thưởng, C. kích thích, D. tạo)
2. D (prevent sb from doing sth: ngăn cản ai làm gì)
3. makes her parents worried (đề bài hơi sai thì một chút, cậu xem lại nhé)
4. John should do homework instead of playing video games last night.
(Hoặc: John should have done homework instead of playing video games last night.)
5. When did you last meet him?
6. unemployment (n): sự thất nghiệp
7. be present (present là tính từ, be + adj)
8. It takes a lot of time to do this work.
9. He is very proud of his ability to play the piano.