______ French well, she went to France to live with his cousins.
| A．Study | B．To study |
| C．Studying | D．Having studied |
Ever since my brother graduated from the university, he _______ in the present company for 15 years and he is now chief engineer of the company .
| A．worked | B．has been working | C．is working | D．works |
The athlete fell off his bike when he _____ down the hill.
| A．cycled | B．was cycling | C．had cycled | D．is cycling |
You can’t be ______ when you camp _____ an high altitude, where the air is thin.
| A．enough careful; at | B．too careful; at | C．careful enough; on | D．too careful; on |
I’d prefer ______ in the office rather than _____ at home watching TV.
| A．working; staying | B．working; stay | C．to work; stay | D．work; to stay |
She wishes to become a beautiful girl, _____ everybody loves.
| A．the one | B．one | C．that | D．which |