Respuesta :
2. My cousins ARE from the u.k
3. We AREN'T good at science.
4. Matt IS at school.
5. I AM NOT old.
Respuesta:
2. My cousins ARE from the U.K.is
3. We aren't good at science.
4. Matt is at school.
5. I am not old.
Explicación:
1. is reemplazado por are.
2. isn't reemplazado por aren't
3. are reemplazado por is
5. aren't reemplazado por am not