There’s a _____ in our office that when it’s somebody’s birthday, they bring in a cake for us all to share.

As we all know, the present world financial crisis still has a bad       on the development of the economy of every country.

Emmett hasn’t got enough ______ to remove that stone. He is only 10.

Football is a ________ of a sharp mind and hard training rather than just talking.

He will come to understand your efforts sooner or later. It’s just a matter of _____.

He will come to understand your efforts sooner or later. It’s just a matter of _____.

It is the       in this country to go out and pick flowers on the first day of the spring．

Children are often full of __________ and they take great interest in everything.

I listened to Dr．Wilson's lecture about the protection of wild animals, but I was unable to grasp its key     .

—Mary was being badly treated when John happened to pass by and helped her out.
—I think it was not a pure ________but had been well planned.