19．

(15)She can go to her son’s teacher for help. (Ask her son to pay for it. Ask her son’s good friends to talk with him about it .etc)

18．

17．

16．

15．

14．(1) B　　 (2) C　　 (3) D　　 (4) A　　 (5) A

13．(1) A　 　(2) B　　 (3) B　　 (4) B　　 (5) C

12．

11．

10．