Do you think exercise can keep us ________？

 ----Do you have any idea why Mark is leaving?---- No. In fact, everyone is ________about it．

According to a White Paper on the health of Chinese white collar workers, 60 percent are over- _______ and 76 percent in poor ________ , with fewer than 3 percent really _________ .

The girl’s _____ voice and excellent performance made her stand out in the singing contest.

---I’m afraid I don’t have the ability to make a speech in public. I’m too nervous. ---Don’t worry. You will overcome it _______if you practice more.