David threatened his neighbour to the police if the damages were not paid.
A. to be reported
B. reporting
C. to report
D. having reported
网友回答
A. to be reported
B. reporting
(答案→)C. to report
D. having reported
解析：考查非谓语动词用法。此处意思为扬言要去告发----；可知threaten to do sth.之意，故选C符合。