It was difficult to tell exactly _______ the saying began, but it is possible that it was in the theatre or movie industry.
__________you’ve passed the test,you can drive a car on your own.But you still should be careful.
The young man is one of the few who __________ the plane crash.
Though he has to __________ a hard time,he still holds a positive attitude towards life.
I’m having a party next Saturday;put it __________ in your diary so you don’t forget.
Every time __________ I called on him,he was very busy.