i don't like the pop singer's songs.in fact,.i don't like the pop singer's songs.in fact,i've trouble ____the words of his songs.A.understandB.to understandC.understoodD.understanding求详解

i don't like the pop singer's songs.in fact,.i don't like the pop singer's songs.in fact,i've trouble ____the words of his songs.A.understandB.to understandC.understoodD.understanding求详解
i don't like the pop singer's songs.in fact,.
i don't like the pop singer's songs.in fact,i've trouble ____the words of his songs.
A.understand
B.to understand
C.understood
D.understanding
求详解

i don't like the pop singer's songs.in fact,.i don't like the pop singer's songs.in fact,i've trouble ____the words of his songs.A.understandB.to understandC.understoodD.understanding求详解
D have trouble doing sth.固定搭配

d

D