She is only a (n) __________, not a friend of mine.
| A．acquaintance |
| B．familiarity |
| C．announcement |
| D．family |
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 |
I ________ the main point of the speech and wrote a summary of it.
| A．grasped | B．misunderstood | C．mastered | D．recognized |
—We all had a lot of fun at the barbecue yesterday. Pity you weren’t there.
— I really should have gone with you, but I ________ on some remaining problems.
| A．was working | B．would work | C．worked | D．had worked |
It is most ________that the experts will come to the area to investigate the possible damage caused by the heavy flood.
| A．likely | B．perhaps | C．possibly | D．probably |
When the middle-aged man was visiting his girlfriend, she demanded that he _______ his beard.
| A．shaved | B．had shaved | C．would shave | D．shave |