21. The film introduction is very attractive. N+tobe+ ADJ
22. The life in the countryside makes us relaxed because it's very peaceful. S+ tobe+ADJ
23.She called him about her furniture delivery. about+ N
24. Each of my friends has a different character. V+ ADJ+ N
25. You should do your test carefully if you want to get good marks. V+N=ADV
26. There was still no agreement  on what to do next. TOBE+ N
27. This river is  very dangerous for swimmers. TOBE+ADJ
28. My mother told me a very interesting story  yesterday. A + ADJ+ N 
29. This old man is deaf in one ear. TOBE+ ADJ
30. He can play many kinds of musical instruments. of + ADJ+ N