The old man was ill in ( ) hospital.A.a B.an C.the D./

问题描述:

The old man was ill in ( ) hospital.A.a B.an C.the D./

应该选D.

The old man was ill in hospital
老人生病住院了,不用冠词,表示抽象的意思,
如The old man was ill in bed. 老人病了,卧床不起.

in hospital,住院

The old man was ill in hospital