SARS is an illness that can result in death unless left in time.A. to treatB. treatingC. t

发布时间：2020-08-17 13:58:17

SARS is an illness that can result in death unless left      in time.
A. to treat
B. treating
C. treated
D. treat

网友回答

A. to treat
B. treating
(答案→)C. treated
D. treat
解析：本句中的treat 充当主语补足语，且与主语SARS之间为被动关系，故应选择过去分词。
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