Ella la compra. I don't think there are two object pronouns that can be used in this one sentence, so I would assume that the second pronoun was for another sentence.
Answer:
Explanation:
Utilizas esto para dirigir (to direct) el carro a la izquierda o a la derecha mientras conduces.(You use this to direct the car to the left or to the right)
-El timón (The steer wheel)
Question 2 with 1 blankSe usa para dejar mensajes cuando llamas por teléfono a alguien y no te contesta. (You use this to leave a message when you call someone on the phone and they don't answer)
- La contestadora (the answering machine).