16. Many students in Thinglong are bad..........English because of their laziness. A. in B. for C. at D. from 17. His parents are surprised at his ....... A. Succeed B. successful 18. She smiled.......because she was defeated. A. happily B. unhappily C. happy 19. Because of her .................. no one can teach her. B. lazy A/laziness C. lazily ***9 C. success D. successfully D. unhappy
