There are many people downstairs. What do you think _____?

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

Recognized as ________ world cultural heritage by the United Nations in 2002, paper cutting is ________ practice which originated in ancient China.

Have you got an iPhone 5?—No, many young people began to say “No” to it because of _________ follow-up service. By the way, I am a supporter of Chinese products.

_____you do, don’t miss this exhibition, for it’s so hard for me to get the tickets.