---Mr. Black, I find ______ difficult to play the piano well.---Oh, I think you just need to practice more
Bill can play_____violin but he can’t play _____chess.
—_____? —Sorry, I can’t.
We only have _____ shower.
— Will you go there by _____ train? —No, I’ll take _____ taxi.
I want to_____ the No. 5 bus to Tian’an Men Square.