问题
选择题
I looked everywhere in the house ______ a key that had been lost.
A．in searching for
B．in search of
C．to search
D．searching of
答案
答案：B
考查短语：in search of寻找，search for 寻找，句意：在房子里我到处看了看寻找丢失的钥匙。所以选B。
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