13-20题,英语大神来,快

13.Jim wondered where could he get this kind of cellphone fixed.
14.Many Chinese students have troubles in learning English grammar.
15.insisted to go swimming.
16.learn from heros instead of showing off his own charming.
17.whether compressed food can store for a long time?
18.too excited to believe that his dream has come true.
19...you tell me how can I help my father get rid of smoking?
20.but also I am looking forward to going on a vacation.