The present tense conjugations of the verb ser are
- yo soy
- tu eres
- el/ella/usted es
That takes care of the singular subjects. The plural would be
- nosotros somos
- vosotros sois
- ellos/ellas/ustedes son
-------------------------------------------
Based on those facts, we have the following answers
- es
- son
- soy
- somos
- Es
- es
- somos
- Eres
- es
- soy
- eres
- son
- son
- eres
- es
- son