The answer is: Cuando es verano
Usted means a proper version of (You) and Tener means (to have)
( if you need to make it into I Have) the answer is (( Yo tengo))
Cinco de mayo is a celebration to commemorate the Mexican Army’s victory against the English empire at the battle of Puebla
<u>⭕ Vamos a tener una fiesta para Maria. Es (su) cumpleaños.</u>