—How do people do bird-watching? —Sometimes they______the birds quietly, sometimes they use telescopes.
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.