Verb: cantar
Yo canto - Cantaba
Tu cantas - cantabas
Èl/Ella/Usted canta - Cantaba
Nosotros cantamos - cantabamos
Ellos/Ellas/Ustedes cantan - cantaban
D.Interior Coumtry
Hope This Help You
The answer for completing the sentence is: ve
Is this a serious question? Haha