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Don't be afraid of asking for help it is needed. A. unless B. since C. although

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Don't be afraid of asking for help it is needed. A. unless B. since C. although

Don't be afraid of asking for help ________ it is needed.

A. unless

B. since

C. although

D. when

 

试题答案

答案：D

解析：
When引导时间状语从句。

 

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标签：askingforhelpofdon

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