Who was it _____ saved the drowning girl?
I have told them with certainty there’ll be no change of policy.
We had hoped that you would be able to visit us, but you .
Do you know that a living cell can be for a thousand years if the temperature is right?
Many experts seem to agree that certain limit should be set on consumption of cars to ease air pollution.
I have got _______ good news for you.You are to change _______ trains in Changsha and take _______ fast one.