6. No des nada
7. No seas malo
8. No te vayas ahí
The answer to this question is to look for the verb word you are trying to change. You could add (ir, er, ar) to the ending of the verb word. A lot of verb words to conjugate are easily identifiable by their endings; primarily if they are in infinitive form; where these words end in at, er, ir.
Answer:
For the first one: voy, ir, acaba, er
Explanation:
Not sure for the second one! Super sorry :c