They produced two reports, ______ of which contained any useful suggestions.
| A．either | B．all | C．none | D．neither |
All of us have already known ____ she will choose is the opportunity to go abroad.
| A．this | B．what | C．which | D．that |
— Did you have a wonderful time at the ball last night?
— ____ ! I’ve never had a more wonderful time all my life.
| A．You bet | B．No problem | C．Don’t mention it | D．Not really |
This machine is very easy______. Anybody can learn to use it in a few minutes.
| A．operating | B．to be operating | C．operated | D．to operate |
Don’t blame the worker. He just carried out the order______.
| A．as told | B．as are told | C．as telling | D．as they told |
I can’t remember when ______ turning point occurred exactly, but it might be ______ summer morning when I was in New York.
| A．不填；a | B．a; a | C．the; a | D．a; the |