Da Shan is _________ at Chinese. He can speak Chinese very _________.
—Do you teach ________ foreign languages? —Yes, I learn them on TV.
Jack _______ swim when he was five years old.
I think this problem is _______ that one.
Mrs Li is planning ______ Beijing with her cousin.
—I’d like ______ dress. What about ____ blue one? —Try it on.