I must be getting fat—I can _______ do my trousers up.
The new machine,if _________ properly,will work at least ten years.
—What were you doing when the telephone rang?—I ______ away my books and ______ to bed.
I thought Jim would say something about his school report,but he ______ it.
We found______ impossible to finish the work on time.
John received an invitation to a dinner, and with his work____, he gladly accepted it.