---I’m sorry to have _________ much of your spare time. ---That’s OK, and I am glad to help you.

Of all the books on the shelf,        is of any use for improving our practical skills of survival in the competitive world.

Eggs in western countries are often sold by _____. 

(2014·福州模拟)Oprah (奥普拉)，the queen of American daytime talk TV，is________as one of the most powerful women in the world.

Many students joined in the ____ race in the sports meeting to be held next week.