Don't be afraid of asking for help_____it's needed.A.unless B.since C.although D.when为什么不选B

分类: 作业答案 • 2022-05-27 20:40:58

问题描述：

Don't be afraid of asking for help_____it's needed.
A.unless B.since C.although D.when
为什么不选B

答

since怎么翻译?
when是当.的时候.