英语翻译刚刚给他发EMAIL就给我回了,我应该说I can't image you can respond me so

it should be
I didn't expect to get your response that soon.
忙你的吧,保重身体 is
Just do your work.Take care of yourself
yes.your explanation is correct.Isn't it the feeling you want to express?
Sorry,I can not input Chinese with this stupid computer...

不用那么麻烦口语化一点 “wow you respond so quickly!" 保重就说”take care " 别说的太麻烦外国人都说的比较简单

I can't image you responded me immediately.
take care