Don’t be afraid of asking for help _______ it is needed.
A. unless
B. since
C. although
D. when
Don’t be afraid of asking for help _______ it is needed.
A. unless
B. since
C. although
D. when
D
根据句意可确定选D项，意为“当需要时不要害怕寻求帮助”。unless意为“除非”；since意为“因为”，although意为“虽然”。