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.
Can' t you write all of the question
Answer:
1.tengo que trabajar
2. Ella tiene que asistir a (la) clase
3. Tienen que comer
4. Tú (tú) tienes que enseñar
5 Tiene que estudiar.
6. Tenemos que usar
CERCA
