问题
选择题
Alice fixed her eyes upon Bob, there was an expression __ that he could not understand.
A．in it
B．on them
C．in them
D．on it
答案
答案：C
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Alice fixed her eyes upon Bob, there was an expression __ that he could not understand.
A．in it
B．on them
C．in them
D．on it
答案：C