He remained calm ________ nothing had happened,______ astonished all of us.

—What time will Mr. Brown be back to China?
—Sorry. I don’t know______.

It’s time to say goodbye to my school. I’ll always remember the people __       
have helped me.

The couple are spending their holiday on     is described as ore of the most beautiful
islands．

Do you still remember the rider and his new bike       we saw in the street last week?

It was in the factory      producced TV sets     our friend was murdered.

You can think of many cases         Chinese students obviously know a lot of English words and expressions but can’t express themselves freely.

_____________, Mother will wait for him to have dinner together.

        is known to  us all is that America is a developed country         _________the First World.

It’s difficult to calculate       its price would be if the museum wanted to sell the ancient vase.