it is difficult to do /doing
is difficult to do sth .还是to doing
It's difficult to do sth 还是It's difficult doing sth
it difficult to do sth 和it is difficult to do sth 的区别
it is difficult to do sth对还是it difficult to do sth对
it is my job doing/ to do?
it is fun to do 还是 doing?
it is difficult to you to do the job
是it is difficult to me to do sth
请问是I find it difficult to do sth还是I find it is difficult to
是否有have a difficulty doing sth.It's difficult to do sth.It's
"发现某事很难"是"find it difficult to do" 还是"find it is difficult t
it is difficult to do 与 it is no easy thing to do 区别