I believe it might be “soy”
1. ahorra
2. gastamos
3. trabajas
4. trabajan
5. saco
Im pretty sure these are the answers ( ◠‿◠ )
B. Supo. ¿Cuándo <em><u>supo</u></em> Ud. que iban a presentar esta obra?
Third person of the singular (she, he, it, you, 2nd person) of the perfect simple past of indicative of knowing.