No, you do not need a hyphen for "overly excited", even if it precedes whatever it modifies. For example, "Gus worked himself into an overly excited state whenever the discussion was about politics." The hyphen is not necessary because the -ly suffix in the adverb "overly" makes it clear that it modifies "excited".
It does not need to have a hyphen! :)
Sound interested, but not overly excited.
This dream probably illustrates one or more common expressions such as "don't lose your head." It suggests that the dreamer regrets having become overly excited or is concerned about the possibility of becoming overly excited and behaving in an inappropriate manner.
No
It's not a word in the dictionary, so yes, use the hyphen.
I do not believe that multitasking is supposed to have a hyphen.
You typically need only capitalize after sentence-ending punctuation, which a hyphen is not.
no
No.
No
no
Yes they do, they eat them for animal protein and other nutrients. They get overly excited when they are shown ants.