20. Teachers and parents should tell kids how good behavior _______ and that it is liked by others.

　 A. helps　　　　 B. works　　　　　　 C. benefits　　　　　　 D. happens

19. Feeling very ________, he felt _______ he should take some action.

　 A. angry; strong　　　　　　　　　　　　 B. angry; storngly

　 C. angrily; strong　　　　　　　　　　　　 D. angrily; strongly