>But very difficult.
Good job, but one thing is wrong. You should say this:
>But it's very difficult.
It's is a contraction of the words it and is, so you could also say it like this:
>But it is very difficult.
English is a stupid language. It does not always follow it's own rules. But you will get it eventually. Keep working at it!
Now for people who had English as a first language, think of the word quick and the word buick. (Which is the name of a car.)
Now think of all the grammar rules of English, then think of how they are actually pronounced, and apply them to quick and buick.
That always makes me mad.