Please don't bother about it.

请不用为此费心。

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1.I'm afraid I can't accept your kindness to help.恐怕我不能接受您的帮助。

2. No,thank you. I can handle it.不必了，谢谢你。我自己能行。

3. No,it's OK,thanks.不，没关系，谢谢。

4. No,don't worry. 不，不用担心。