You and I is the correct answer because it is being polite and putting the other person before you.
Answer: Nevertheless
Explanation: Well otherwise would be the opposite of specifically, so it's not that one. Similarly isn't similar to specific at all so using that instead also wouldn't work. Incidentally just isn't the correct word you would use in a sentence like that so I would say the answer is nevertheless.
I believe that it is true.
Answer:
they give too much homework for 7th grade and also they give us a lot of projects and last they make us do a lot of work in class