—Which do you like ________, pears or apples?—Apples.

－Peter is       than you, right?　－Yes, but he is        runner in our class.

--- Why did you buy two pairs of shoes? --- It was so hard to choose which was________, so I took them both.

Of all the CD players in the shop, this one is ________.

China is developing _________ of all the countries in the world．