1. Primavera
2. Verano
3. Invierno
4. Otoño
5. Verano
6. Verano
7. Primavera
8. Invierno
9. Verano
10. Otoño
If I'm not mistaken it should be (C.)
The correct answer is B, van a.
The literal translation reads, “My sister and you are going to go fishing this afternoon,” and van a means going to.
I hope I helped!