问题
I’m not a little tired today after giving the room a thorough cleaning and I have never had ______ today.[ ]
A: as tiring a day as
B: as a tiring day
C: tiring as a day as
D: day as a tiring as
B: as a tiring day
C: tiring as a day as
D: day as a tiring as
正确答案是：
