—Be careful not to drop the Tang Dynasty vase .
—Yes , we can’t be .
| A．too careful | B．very careful | C．too careless | D．careless enough |
If you really have to leave during the meeting, you’d better leave ____ the back door.
| A．for | B．by | C．across | D．out |
Fred entered without knocking and, very out of breath, sank _______ a chair.
| A．on | B．off | C．into | D．to |
He found it increasingly difficult to read, ______ his eyesight was beginning to fail.
A. though B. for C. but D so
－Do you have a minute? I’ve got something to tell you.
－Ok, ______ you make it short.
| A．now that | B．if only |
| C．so long as | D．every time |
Everybody was touched _____ words after they heard her moving story.
| A．beyond | B．without | C．of | D．in |