It is well known ____ all people that Beijing is known ___ the capital of China.
—Tom graduated and got his degree in Business management. — .
— Generally speaking, light ___ faster than sound. — Yes, it is a rule.
–Is Miss Green in the office?--No, she ____ to the library.
-A nice tie! A present? -Yes, it is. My aunt it to me for my last birthday.
—I didn’t know .