After ____ seemed like hours he came out with a bitter smile.
The cancer risks _______ with smoking have been well proved.
_______ with his research work, the professor cared little about any other things.
_______ Bagrit’s predictions so remarkable is their accuracy.
To British people,Canadians may sound American; to Americans,they may sound British. Canadians themselves insist on not being identified with .
We have a high regard for Mr. Black because he always tries to ________ his principles.