This computer is of good quality. If it ___________ break down within the first year, we would repair it at our expense.
She died __________ old age while her son died young.
—What do you think of teaching, Bob?—I find it fun and challenging. It is a job __________ you are doing something serious but interesting.
He hurried home, only to find his house __________.
Thank you for __________ to help, but I can manage it myself.
Tom went to his teacher for __________ on how to work out the problem.