Everything he ________ away from him before he returned to China.
| A．took | B．had been taken |
| C．had had been taken | D．had taken |
The invention of the typewriter was a great_______ to communication and printing.
| A．contribution | B．devotion | C．revolution | D． construction |
.He is a new comer in the team, but I have the______ that I have seen that man before.
| A．decision | B． situation | C．impression | D．position |
We would like to drop in at your house if ___________
| A．you are convenient |
| B．it is convenient of you |
| C．it is convenient to you |
| D．you will be convenient |
The water in this glass is too hot. I prefer some cold______ water.
| A．to boil | B． having boiled | C． boiling | D． boiled |
_________with a difficult situation , Tom decided to ask his boss for advice.
| A．To face | B．Having faced | C．Faced | D．Facing |