His arm was not in a sling, and showed no sign_____ .<br />A.of having been damaged<br>B.of having been damaging<br>C.to damage<br>D.to be damaged

His arm was not in a sling, and showed no sign_____ .
A.of having been damaged
B.of having been damaging
C.to damage
D.to be damaged

出自：国家开放大学英语语法

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