The least common multiple of 10,16,18 is 720. After 720 seconds or 12 minutes the bells will sync up.
The answer is A. D should have a 's' on cubano. So yeah. its A
1. yo voy
2. tu novio va
3. Adela va
4. mi prima y yo vamos
5. Tú vas
6. ustedes van
7. nosotros vamos
8. usted va
9. nosotras vamos
10. Miguel va
11. Ellas van
#2 “Usar” and “casa”
#3 “tocar” and “restaurante”
#4 “levantar” and “gimnasio”
#5 “ayudar” and “iglesia”
#6 “pasar” and “cafeteria”
#7 “salir” and “centro comercial”