修改：在错的词下画一横线，并在该词下面写出修改后的词。

注意：1 每处错误及其修改均仅限一词；

2只允许修改10处，多者(从第11处起)不计分。

DearTom，

Howis everything going? I have favor to ask.Next week，I was going to a reception at the City Hall.As is expected，I'll meet some high school student and their teachers invitingfrom America.

Theonly problem is that because I'm not very good at small talks with people Idon't know.So I am worried that I will make a fool of myself but make othersembarrassing.I wonder if you would be kindly enough to give me some tips inwhat I can talk about with people from America.Are there any questions that youshould not ask?

Lookingforward to your early reply.

Yours

Li Hua

下列函数中，在区间$\left(0+\infty \right)$不是增函数的是（        ）