胫骨平台骨折后期最易并发（）。

A.缺血性肌挛缩

B.缺血性骨坏死

C.足下垂

D.迟发性畸形

E.创伤性关节炎

Lucy is looking forward        her grandparents.     [ ]

A. to see

B. to seeing

C. at see

D. at seeing