---Isn’t it time you went to bed, Mike?---I _____ painting all afternoon, so I have to finish my homework now.
______ all the possibilities, I really believe that I’d prefer to make any change now.
Nobody could______it when the bull broke into the shop and attacked two customers with its horns. The others just hurried away from it.
He appears ______ a long time. He is impatient for my arrival.
Every device ______in the plane must be designed and made with great care so as to make sure that nothing goes wrong in operation.
He left home early only______he was late as he went a wrong way.