The precious manuscripts were hopelessly________by long exposure in the cold，damp cellar.
| A．damaged | B．destroyed | C．harmed | D．ruined |
It was in the street_________ I met Mary yesterday .
| A．that | B．when | C．where | D．what |
In my opinion, the view Jennifer the other day is well worth discussing at this meeting.
| A．put forward | B．put out |
| C．put on | D．put off |
Only when the final examination was coming ______ he had quite a lot to do.
| A．he realized | B．he had realized |
| C．had he realized | D．did he realize |
Practising Chinese kong fu can not only ______ one’s strength, but also develop one’s character.
| A．bring up | B．take up |
| C．build up | D．pull up |
Scientists are convinced ___ the positive effect of laughter ____ physical and mental health.
| A．of; on | B．by; in |
| C．of; at | D．on; at |