Answer:
2. My parents are going so I am too.
3. ???
4. Annie didn't want to go out even though it was her birthday.
5. Patricia enjoyed her trip, and her sister did too!
6. Since I have a few days off, I'm going to visit my Uncle.
7. Boris went to work although he was sick.
Jane didn't go to the party, neither did Danny.
Don't forget the parentheses!!!