-----Thank you for the great favor you _____me in face of difficulty. -----It is no ______at all. Helping others also benefit me .
Do you know the name of the play___ in the hall now?
She was surprised to find the house _____ into when she went back home.
His novel has ________ him such a reputation.
Cloning an animal is a complex ________ that can go fatally wrong at any stage.
________ is as much an art as it is ________ science.