You are welcome!
Not at all!
That's all right!
It's my pleasure!
My pleasure./It's a pleasure.(或直接说：Pleasure.)
2.Don't mention it.
3.You're welcome.
4.That's all right.
5.Forget it.
6.I'm glad that I could help.(或Glad that I could help.I'd really like to help)
7.Anytime.(随时愿意效劳)
8.Not at all.(英国人常用)
9.No worries.(美国年轻人常用)
10.At your service.(对女孩子用)