Giúp mình 20-30 vớia

19. the sun was shining it wasn't very wam. B. When D. Although sense of humor distinguishes him from others, is really considerate and generous D. whose A. Because C. While 20. My father, A. who B. which C. he 21. Ba : That's an excellent drawing, Hoa. Ноа : B. It's nice of you to say ...