________he couldn’t understand was________，as a teacher of Chinese，he was asked to teach history.

________is known to us all is that the 2012 Olympic Games will take place in London.

Please remember________wins your respect is not your background but your knowledge and virtues.

It is uncertain________side effect the medicine will bring about，although about two thousand patients have taken it.

_______young people see and hear in the media helps them to figure out how the world works.

—Mary looks down today.What is up?

—Well，________happened between Mary and me is none of your business.

It makes his life quite different_______he has received education abroad.

She lost heart since she failed in the exam.She felt________about her future.

Will you be home________to see the children before they go to bed?

________， I lost heart in English learning，but my teacher often said to me，“Keep on studying hard，and you’ll succeed________.”