Object pronouns

Do you like this book? Yes, I like (a)  

o you know Camila? Yes, I know (a)  

Did you see that car? No, I didn't see (a)  

Did you call your brother? Yes, I called (a)  

Do you call with Andrés? No, I don't call (a)  

Does she like the hamburger? Yes, she likes (a)  

It's Carolina's birthday today. I called (a)   this morning.

Amy and John are my new friends. I really like (a)   .

Did you write to Juan and Pedro by WhatsApp? Yes, I wrote (a)  

Will you study with Carlos and Diana? Yes, I will study with (a)