问题描述：
__I met Mary ,I thought she was a very mean girl.
A,At first time
B,For the first time
C.The first time
D.By the first time 选C 可是不知道其他选项用于那种情况?
A,At first time
B,For the first time
C.The first time
D.By the first time 选C 可是不知道其他选项用于那种情况?
问题解答：
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