Here’s another tip about verbs that end in ‘ed’ and ‘ing’:

You

can used these prepositions after the ‘ed’ adjective. For example:
-I am distracted by Facebook.
-I am confused by this.

1) You can use "by" after almost all of the "ed" adjectives. The exceptions are in orange.

2) But we use "in" for "interesting".

3) With "excited", use "for" if you're excited for something in the future.

4) You can used "for" for some of these if it's on behalf of someone else. For example, if you got a new job, I would say "I'm excited for you!"