Her mother is in ( ) hospital.she must go to ( )hospital and

第一空不填,in hospital表示生病住院.
第二空填the go to the hospital去医院看病人,而非生病住院.
类似的“go to school 上学读书”
go to the school 可能是去学校里找人,而非读书了.
go to church 去教堂做礼拜.
有无冠词,意思会有不同.加油!