Don’t be afraid of asking for help ___________ it is needed. A. unlessB. sinceC. whenD. although
2022-11-23 05:02:48 158次 2013-2014学年北京市东城区普通校高三3月联考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Don’t be afraid of asking for help ___________ it is needed.
A. unlessB. sinceC. whenD. although
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