Look at the sweat on her face. She________the house since she got up this morning.[ ]

A. is cleaning  

B. has been cleaned

C. was cleaning  

D. has been cleaning

颈部海绵状血管瘤婴儿期常为_________________，幼儿时则向__________及__________过渡，成人均为_________________，由多数______________构成。