We call the baby panda Xi Wang. Xi Wang in this sentence is________.　

___is no doubt that the Dallas Mavericks will defeat the Washington Wizards in the next game.

He likes to play ______ violin and I listen to _______ music.

I have to buy _________of the two books because I don’t know which to choose.

Is your iPad black, Mary?–No, it isn’t. ______________ is white.