He's so determined that no one can ________from making an attempt.
—What are you doing outside the class? Didn’t you hear the clock ______? —Sorry, sir. I ______.
We have made it a rule that whoever finds that tree first can take_________ of it.
He dropped the ______ and broke it.
Please never do such things _______ other people.
The old professor travelled from one school to another, _______ first-hand information about the education situation in China.