______ has an internal clock that regulates the beating of our hearts, and the ______ of our breathing.
“I can’t do anything with it,”said Bob,__________at the colour TV set.
It was raining heavily.Little Mary felt cold, so she stood_______to her mother.
I don’t think________possible to finish so much work within so short a time.
He got a new job in a restaurant and he ________it.
He is famous______a writera________his novels.