Jeff is hard-working. He seldom, _____, comes to work late and leaves off early.
When lastvaluable, those books enjoyed great success.
He knows little of mathematics, of chemistry.
Discovering consists of seeing what everybody has seen andwhat nobody has thought.
—Did the policeman let you in?—No, I told him who I was.
He likesmusic so much that I think it right to buy himMP3 asbirthday present.