The scientist’s many years’ careful observation ____ a surprising discovery.
| A．ran into | B．began with | C．led to | D．came from |
After meeting the beautiful girl, Peter lay on his bed with wonderful ideas ________ in.
| A．crossing | B．crowding | C．entering | D．reaching |
Yao Ming as well as his teammates ________ hard to win honor for China these years.
| A．work | B．are working | C．has been working | D．works |
Practising Chinese kung fu can not only ________ one’s strength, but also develop one’s character.
| A．bring up | B．take up | C．build up | D．put up |
— You were brave enough to raise objections at the meeting.
— Well, now I regret ________ that.
| A．to do | B．to be doing | C．do | D．having done |
Measures have to be taken to teach young people how to ________ themselves both in family and at school, for they don’t know the basic manners.
| A．do | B．perform | C．behave | D．control |