3.His pants are ①out of style.①(画线部分提问）
How style are his pants?
4.You could ①borrow some books from Jim.①(提问）
What could you borrow?
5.This matter surprised me.
I was surprised at this matter.
6.I don`t know what I will do next.(改为简单句）
I don`t know what to do next.
期待帮你更多!