A. Doblar
Explanation- you have to turn you cant go straight
Answer: 1: Whoever wants to do it
2: who wants to do it ?
Explanation:
Translating the sentence, we get something along the lines of Raul ____ the pen to write. There's one word we can see falls into the blank, and that's used. Now all wee need to do is translate used into Spanish. One way to say used in Spanish is usado, so usado is the word that best completes the sentence.
Here you go. I hope I helped I wasn't sure if you wanted it in English so I wrote it in Spanish.