It is fun to planting trees.哪错了?

It is fun to do sth造句 It is fun to do sth.造句. what fun it is to=how____ it is fun to do 还是 doing? 为什么是what fun it is to. It is fun to do sth对,还是It is fun to doing sth it is a great fun to do sth.还是it is great fun to do sth It is fun?到底是It is fun to do sth 还是It is fun doing sth?It is fun for sb + What fun it is 和How fun it is 后面加doing还是to do what a fun和how fun的用法是what a fun it is to do sth还是how fun ? it is fun for us to write to each It is great fun to do ...It is great fun to do sth还是It is a great fun to do sth? ___great fun it is fun可以做形容词吗fun可以做形容词吗fun可以做形容词吗it is fun to do it fun是什么词性 learn,to,fun,is,English,it?连词组句 what fun it is to do怎么造句 what great fun it is+to do sth 吗 用it is really fun to造句 快速!