---Mr. White didn’t come last night, did he? ---No. We for him. A whole night was wasted. A. had waited B. have been waiting C. were waiting D, had been waiting
Scotland lies the north of England, it is of Britain.
When last valuable, those books enjoyed great success.
He knows little of mathematics, of chemistry.
Discovering consists of seeing what everybody has seen and what nobody has thought.
—Did the policeman let you in?—No, I told him who I was.