The professor ________at 8 o’clock,but he has not shown up yet,which worries all of us.
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.
My ________ of this weekend’s activity is going out with some good friends.