The error is the word "weren't" it should be wasn't
Answer: I personally think that, if you let the supposed "robot" got to long without charging fully or at all, it could burn out, just like a phone, you should let it die every once in a while, as it gives the battery a break
Explanation:
AGH! sorry, i sometimes do this, i will write the answer way too long, anyways hope this helps!
Answer: An Elliptical sentence ends with a pronoun im pretty sure.
Education became a community effort, and the entire community benefited from it.