Due to bad weather the police had tothe search for the missing boy.A. resignB. abandonC. c

问题补充：

Due to bad weather，the police had tothe search for the missing boy.

A. resign

B. abandon

C. conduct

D. release

答案：

A. resign

(答案→)B. abandon

C. conduct

D. release

解析：考查动词辨析。句意：于天气恶劣，警方不得不放弃寻找那失踪的孩子。resign“辞职”；abandon放弃；conduct指导；release释放。根据此题干中的时间状语so far(迄今为止)可知应用现在完成时。故D正确。