Don’t be afraid of asking your teachers for help it is needed.A. asB. sinceC. unlessD. whe

发布时间：2020-08-17 10:13:27

Don’t be afraid of asking your teachers for help     it is needed.
A. as
B. since
C. unless
D. when

网友回答

A. as
B. since
C. unless
D. when
解析：D
解析　考查连词。句意为：如有需要，不要害怕向老师求助。此处when相当于if，表示条件，其他不符合语意。
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