单选题 Websites promoting re-gifting and green gifting are _______ in France, with many reporting a rise in business.

单选题 The Internet company Yahoo has bought an _______ created by a British teenager in a deal reported to be worth tens of millions of dollars.

单选题 If you find you are wrong, be sure to correct yourself and apologize to those who you have_______.

单选题 Few of today’s occupations require ______ physical activity, and much of our leisure time is spent sitting still.

单选题 With the minimum wage people can hardly pay the rent, ________ pay for food and other living cost.

单选题 I’m in real trouble. I’m in the middle of an assignment and my computer has ________.

单选题 The ______ will be refunded after you buy the music record.

单选题 Scientists theorize that the amount of these chemicals ________ by a person’s brain quite possibly indicates how much faith the person has in his or her doctor.