[题目]Don’t be afraid of asking for help it is needed.A. unless B. since C. although D. when 题目和参考答案——青夏教育精英家教网—

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【题目】Don’t be afraid of asking for help ______ it is needed.

A. unless B. since C. although D. when

【答案】D

【解析】

试题分析：句意：当需要寻求帮助时，不要害怕寻求帮助。A. unless如果不； B. since自从；C. although虽然；D. when当……的时候。结合句意，故选D。

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