lucy's mother has been ill___for a week A.in the bed B.in bed C.on the bed D.On bedon bed是床单的意思,in the bed 和on the bed都是在床上的意思,in bed是卧床的意思所以感觉应该是选B吧...

问题描述:

lucy's mother has been ill___for a week A.in the bed B.in bed C.on the bed D.On bed
on bed是床单的意思,in the bed 和on the bed都是在床上的意思,in bed是卧床的意思所以感觉应该是选B吧...