问题补充：
There was a murder in one of the poorest suburbs in the city the other day. Now the police are turning the whole house upside down clues.
A. in want of
B. in search of
C. in favor of
D. in need of
答案：
A. in want of
(答案→)B. in search of
C. in favor of
D. in need of
解析：考查固定短语。A“需要”；B“寻找”；C“支持，有利于”；D“需要”。句意“在这个城市最贫困的一个郊区，几天前发生了谋杀案。现在，警方正在把整个房子翻遍，来寻找线索。故选B。”
