1 . Such is human nature, that a great many people are often willing to ________ of becoming white-collar workers. This can ________ . (根据句意填空)

2 . 对于从事体力劳动且收入较高的人没有必要放弃较高的薪水以换取做白领工人的殊荣。(need)
_________________________________________________________________________.

3 . He found it a great ___________ to be invited to such a grand occasion attended by the top celebrities and nobles in the town.

A．obligation

B．privilege

C．advantage

D．opportunity