Answer: I think it's the first one
Explanation:
Sorry if I'm wrong
Answer:
"Once you've learned to use it" must indicate that you've mastered something, and once you've mastered this thing you could maybe evolve it and keep evolving it as said in this qoute "there's no end to what you can do" since you've already mastered it.
I'm not sure about this answer but I tried my best to help.
Answers:
1. started (past simple)
2. looked (past simple)
3. knew (past simple)
4. had gotten (past perfect)
5. remembered (past simple)
6. had attended (past perfect)
7. had taught (past perfect)
8. ran (past simple)
9. put (past simple)
10. joined (past simple)
11. pulled (past simple)
12. heard (past simple)
13. knew (past simple)
14. was coming (past perfect)
15. gave (past simple)
16. probably saved (past perfect)
i hope this helps! :D
I think the answer is B. Hope this helps you
