Ответ:

1) Is Mark a teacher?     No, he isn't                    2) Is Tom a happy?        No, he isn't.                 3) Is he like vegetables?     No, he isn't.          

4) Are they play the trumpet?   No, they aren't.    5) Is it your birthday?        Yes, it is.                  6) Are they friends?           Yes they are.                         7) Is Mary a tired?        Yes, he is.                          8) Is it a parents?          Yes, it is.