问题
选择题
She locked her room _____ a thief would break into it.
A．in case that
B．for fear that
C．in case of
D．for fear of
答案
B
根据句子结构，因介词of不能引导句子，从而排除C、D；再看in case that强调客观的一种可能性，而for fear that强调主观害怕的心理。故答案选B。
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