Only when one loses freedom _______its value .
| A． doesoneknow | B．onedoesknow | C．doesknow one | D．knowonedoes |
I failed in the examination last week and I regret _____________ hard.
| A．not to study | B．not studying | C．have not studied | D．did not study |
When Tony came to, he found himself ___________ in hospital with his teachers and classmates around him.
| A．lying | B．laying | C．laid | D．lied |
We __________3,000 English words by the end of last year.
| A．have learned | B．had learned | C．learned | D．learn |
We donated some money and clothing to the children ________ parents were killed in the earthquake.
| A．their | B．which | C．whose | D．who |
Going abroad for_______ further education is _____ enjoyable experience for Tom.
| A．a; an | B．不填；an | C．不填；不填 | D．the; the |