It is difficult for her to make the final decision now, ______she is in a delicate situation.

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问题 It is difficult for her to make the final decision now, ______she is in a delicate situation.

选项 A、if
B、unless
C、until
D、since

答案D

解析四个词中，只有since可以引导原因状语从句，表示“由于，因为”的意思，故选D。

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大学英语三级A级

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