实行物业服务酬金制的，物业服务企业应当向业主大会或者全体业主公布物业服务资金年度预决算，并每

He _____ on this essay for twenty minutes but he _____ only a hundred words.

A、has been working; has written

B、is working; writes

C、has worked; has been writing

D、works; is writing

After (driving) twenty miles, he suddenly (realized) that he (has been) (driving) in a wrong direction.

A．driving

B．realized

C．has been

D．driving

After (driving) twenty miles, he suddenly (realized) that he (has been driving) (in) a wrong direction.

A．driving

B．realized

C．has been driving

D．in

He has been()with a certain form. of mental disorder for twenty years.

A、afflicted

B、addicted

C、affiliated

D、consulted

My son has been to the Europe. By the time he is twenty,____________(他到那时几乎已走遍各处).

_____has Mr. Clinton been a member of Greener China since he ____ to China？

A、How soon, comes

B、How often, got

C、How long, came

D、How far, arrived

He has been working hard at his() (博士的) thesis on computer for more than half a year.

A、master ’s

B、bachelor ’s

C、doctoral

D、professional

A．used to

B．got used to

C．been fond to

D．preferred

When William hurried home, he found that his mother ____already ____to hospital.

A、has; been sent

B、had; sent

C、has; sent

D、had; been sent

______ liberated in 1949, the workers and peasants ______ a hard life now.

A．Had not China been, would still be living

B．Had not China been, would have still been living

C．Had China not been, would still be living

D．Had China not been, were living