Yo necesito el cuchillo por favor
The first one is B and the second I’m pretty sure is A and if not A then B
What is the question here? Are you asking if the translation is correct?
"¿Preguntas una chaqueta nueva para la Navidad?" means "Are you asking for a new jacket for Christmas"
I'm not sure if that helps you or not, so I'm sorry if it didn't!