来自冯春岳的问题
ThenexttraintoBeijing_____hereat3'oclock.A.isdueB.isduetoC.isduefor
ThenexttraintoBeijing_____hereat3'oclock.
A.isdueB.isduetoC.isduefor


ThenexttraintoBeijing_____hereat3'oclock.A.isdueB.isduetoC.isduefor
ThenexttraintoBeijing_____hereat3'oclock.
A.isdueB.isduetoC.isduefor
B.isdueto
to不能省,因为是介词.不是副词.
isdueto也是词组,整体.