The answer is: my parents had sent me all the books
Rule = had+past form of verb
The affirmative usted (You) and tener is (have)
Yo soy alta
yo and soy always go together
1. Primavera
2. Verano
3. Invierno
4. Otoño
5. Verano
6. Verano
7. Primavera
8. Invierno
9. Verano
10. Otoño