25. 拾起;获得;学会;买到;(用车,船)接人 pick up
24. 分辨,挑出 pick out
23. 说服某人不做某事 persuade sb not to do = persuade sb out of doing
22. 说服某人做某事 persuade sb to do= persuade sb into doing
21. (固执地)坚持 persist in doing
20. 孜孜不倦地学习 persevere in doing sth
19. 允许某人做某事 permit sb to do sth
18. 允许做某事 permit doing sth
17. 请求许可 ask for permission
16. 用铅笔 in pen