________ from heart trouble for years，Professor White has to take some medicine with him wherever he goes.
A．Suffered B．Suffering C．Having suffered D．Being suffered
Did you ask whose computer________？
A．this blue one was B．is this blue one
C．it was this blue one D．this blue one is
—Do you think it’s going to rain over the weekend?
—________.
A．I don’t believe B．I don’t believe it
C．I believe not so D．I believe not
Johnson had made up his mind to give it up，but on________ second thought he determined to try________ third time.
A．/；a B．/；/ C．a；a D．the；a
He left a good impression on me________ I saw him.
A．for the first time B．the first time
C．first time D．it’s the first time
—Where did you find the wallet?
—It was at the stadium________ I played football.
A．that B．where C．which D．there
