Respuesta :
Answer:
The answer is linking
Explanation:
#1. is known
#2.became
#3. invented, developed
#4. keeps
#5. hung
#6. tossed
#7. blocked
#8. have been made
#9. brought
#10. became
#11. action
#12. action
#13. linking
#14. action
#15. action
#16. linking
#17 action
18. linking
19.action
20. action
21.S-TrV-IO-DO
22. S-InV
23.TrV-DO
24.S-TrV-DO
25.S-InV
26.S-TrV-IO-DO
27.S-TrV-DO
28.S-TrV-IO-DO
29.S-TrV-DO
30.S-InV