I don't know why I have a lot of truble ___ English.You'd better ask the teacher for help.to learn B.laerning C.kearned D.learns 最佳答案是哪一个?

I don't know why I have a lot of truble ___ English.You'd better ask the teacher for help.
to learn B.laerning C.kearned D.learns 最佳答案是哪一个?

B
have trouble doing sth

learning
现在分词短语作状语

答案是A,have a lot trouble to do sth

应该选B,这是trouble的一个用法：have trouble doing sth