I arrived late; I ________ the road to be so icy.

A.wouldn't expect

B.haven't expected

C.hadn't expected

D.wasn't expecting

答案及解析： C

解析：

“我到晚了”是“我（事先）未想到道路这么滑。”“未想到”发生在“到晚了”之前。表示过去的过去,用过去完成时。