The police suspected him of carrying drugs so they his bag，but found nothing.
A. looked up
B. turned in
C. searched for
D. went through
网友回答
A. looked up
B. turned in
C. searched for
D. went through
解析：D
解析 句意为：警察怀疑他携带毒品，因此他们仔细检查了他的包，但什么也没有发现。go through经历，仔细检查，用完，通过。而look up“查阅(词典)”，search for“寻找”和turn in“交还，上交”都和语境不符。