题目：
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
答案：
答案：C
答案 C [threaten to do sth意为“威胁要做某事”，threaten后接动词不定式作宾语，所以排除B、D；report(报告)这一动作的执行者是David，因此用不定式的主动式。]
