When a new system _____, the old one is abolished.
| A．came into being | B．comes into being | C．is come into being | D．come into beings |
He was determined to hold on to this job ___ difficulties he might run into.
| A．whatever | B．however | C．no matter how | D．no matter |
_____ on the top of the hill is a monument, dating back to hundreds of years ago.
| A．Having stood | B．Standing | C．Being stood | D．Having been stood |
----Dad, can I go out to play basketball now ?
----- Sorry, you can’t ______you haven’t finished your homework.
| A．before | B．until | C．as | D．unless |
---Sorry, sir. I can't answer this question.
---Well, you are supposed ______ this part of history.
| A．reading | B．to be reading | C．to read | D．to have read. |
I promise _____ else can you find ____ better computer at such a low price.
| A．anywhere, a | B．nowhere, the | C．nowhere, a | D．somewhere,/ |