---John, this watch is mine. How did you get it?---This morning I found it under my desk, so I ______it_______.
Difficulties are nothing _____we are not afraid of them.
—What did your father ask you just now? —He asked me ______.
_____the doctors in the hospital is about100 and one fourth of them are _______doctors.
We will go out for a picnic if it _____tomorrow.
Put it down, Jim. You mustn’t read ______letter.