Jenny worked hard before the final examination, and it _______ .She got an A. A.showed off B.paid off C.put off D.took off
Oh, Tom your face is very dirty.Look at yourself ___ the mirror.
Madame Curie and her husband continued to work __ all the discomforts.
Not only he but also you __ wrong.
This writer’s books are devoted ___ children.
No matter what happens, you should stick ___ your word.