Of the two brothers, Bill is    younger one, and he is a quiet boy, _____ that most adults like very much．

Of all the books on the desk,    is of any use for our safety．

—Which of the three optional courses did you like best,Joe?
—To tell you the truth, I didn’t like          of them.

—Who’s knocking at the door?
—Maybe        wanting to sell some new products.

Barack Obama’s victory is a historic victory and    that promised change and overcame centuries of prejudice.

—The exam was easy,wasn't it?
—Yes,but I don’t think     could pass it.

I’m afraid I have to go out now.If        phones, tell         I’ll be back later.

Professor Zhang handed out the textbooks to all the students,except       who had already taken them.

The children were catching butterflies in the garden. Some caught a lot, and others caught _______ at all.

After work I went to the box office to buy the tickets for Kungfu Panda 2．only to be told there was ______ left．