问题
选择题
These young orange trees need special care _______ they can live through winter .
A．for
B．because
C．so that
D．unless
答案
答案：C
so that 表示以至于… 引导结果状语从句。
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These young orange trees need special care _______ they can live through winter .
A．for
B．because
C．so that
D．unless
答案：C
so that 表示以至于… 引导结果状语从句。