许小丹丹丹
道谢:thank you(very much). thanks(a lot).thank you for helping me.thanks for your help.道歉:I am sorry. sorry.道别:see you.goodbye.Bye.Bye bye.so long.
KING纠结
thank you./it is very kind of you to help me./ you are very kind.good bye/ see you / so longi am sorry ./it is my fault ./i apologize for it