The man seemed________in trouble．
A.being
B.be
C.to be
D.was
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C解析分析：seem(似乎，好像)后面的动词要用动词不定式，所以选C项。(延伸)seem后面可以接名词作表语，如：It seems a good idea．＝It seems to be a good idea．也可以接形容词作表语，如：She seems sad．＝She seems to be sad．(延伸)It seems+that从句，如：It seems that he knows everything．(题型变化)The man seemed to be in trouble．＝It seemed that the man was in trouble．