Although she is only 17 years old, she _________ drugs for two years.
Have a good look round the room to make sure you ______ everything.
Tom has formed the habit of jogging_________ the tree-lined avenue for two hours every day.
—How do you find your classmates?—Most of them are kind, but ____ is so good to me as Peter.
I have offered to paint the house in exchange for a week’s ____________.
The biggest whale is _______ blue whale, which grows to be about 29 meters long—the height of______ 9-story building.