Over a third of the population was estimated（）(無(wú)法獲得) to the health service.

Most doctors recognize that medicine is as much（）(是一門科學(xué)，也是一門藝術(shù)).

I should say Henry is （）(與其說(shuō)是個(gè)作家不如說(shuō)是) as a reporter.

Everybody knows he（）（受到了冤枉指控）.

Mark often（）(試圖逃脫罰款) whenever he breaks traffic regulations.

But for his help, I （）(我不可能這么早完成).

Buying clothes（）(是一件很耗時(shí)的工作), because those clothes that a person likes are rarely the ones that fit him or her.

The room is in a terrible mess; it （）（肯定沒(méi)打掃過(guò)）.

The ship’s generator broke down and the pumps（）(不得不用手工操作) instead of mechanically.

It may be necessary to stop（）(每隔一定時(shí)間) in the learning process and go back to the difficult points in the lessons.