The news quickly spread ______ China has successfully launched another manned spaceship.

_______ was known to them that the boss had broken his promise______ he would give them a rise.

It was on the festival occassions __________ the family got together __________ he missed his family.

David has to admit the fact ________ he has fallen behind the others in his class.

It was the belief ____ Alex Haley could find his root in Africa ____made him decide to go to Zambia．
A． /, which        B．which, that       C  that ,which       D．that , that

_____, the car stopped all at once.

It’s significant for graduates to find a proper job,       in which they can bring their potential into full play not just a considerable income.

My English teacher gave us a suggestion yesterday, _____is often the case, ______our monitor organize a debate after class.

The fact has worried many scientists _____ the earth is becoming warmer and warmer these years.