Spanish Ser Conjugation

If you know the subject of the sentence is Yo, what is the proper conjugation of the verb 'ser'?

• Somos
• Soy
• Es
• Son

If you know the subject of the sentence is Tú, what is the proper conjugation of the verb 'ser'?

• Eres
• Somos
• Soy
• Es

If you know the subject of the sentence is Él, what is the proper conjugation of the verb 'ser'?

• Son
• Somos
• Es
• Soy

If you know the subject of the sentence is Ella, what is the proper conjugation of the verb ser?

• Es
• Son
• Sois
• Somos

If you know the subject of the sentence is Nosotros, what is the proper conjugation of the verb ser?

• Sois
• Son
• Somos
• Eres

If you know the subject of the sentence is Nosotros, what is the proper conjugation of the verb ser?

• Sois
• Son
• Somos
• Eres

If you know the subject of the sentence is Ustedes, what is the proper conjugation of the verb ser?

• Es
• Eres
• Son
• Soy

If you know the subject of the sentence is Ellos, what is the proper conjugation of the verb ser?

• Es
• Son
• Eres
• Somos

If you know the subject of the sentence is Ellas, what is the proper conjugation of the verb ser?

• Es
• Eres
• Somos
• Son

Complete with the verb ser: 
Marcos y yo ______ muy buenos amigos. 

• soy
• eres
• es
• somos