Ⅱ 单项选择(共15分 每小题1分)
( )21.It’s a good idea _____ a pen friend to practise English.
A.find B.to find C.finding D.found
( )22.You should _______ in the dictionary when you meet a new word.
A.look it up B.look after it C.look it over D.look it through
( )23.---What about _______ a rest?
---OK!Let’s go for a walk.
A.to have B.had C.have D.having
( )24.---Tim played the guiter very well in the school talent show.
---I think so.He practices__