It was reported that many helicopters were sent there the missing passengers.A. in search

问题补充：

It was reported that many helicopters were sent there the missing passengers.

A. in search of

B. in need of

C. in charge of

D. in time of

答案：

(答案→)A. in search of

B. in need of

C. in charge of

D. in time of

解析：考查词组：A. in search of寻找B. in need of需要C. in charge of负责D. in time of在…时候，句意是：据报道很多直升飞机被派到那里去寻找失踪的乘客。选A。