____________ that you are chosen to be a volunteer at the London Olympic Games,what will you do?
If a thing is worth ______, it must be well ______.
I, who ____ your teacher, will try my best to help you with your English.
All that can be done _______.
The man couldn’t _____the fact that the lost watch was found in his house.
Towards _______evening, ________ cold rain began to fall down.