— We could have asked Miss Keller for help. She is always kind-hearted.

— Yes. A whole day _____. [ ]

A. will waste

B. had wasted

C. was wasted

D. would be wasted

失活剂烧伤的临床表现除外

A．封药后自觉胀痛不适
B．龈组织呈暗灰色坏死
C．牙龈组织的探痛明显
D．牙轻度咬合痛和叩痛
E．严重者牙槽骨可坏死