Respuesta:Here's the breakdown of the exercise, transforming statements into questions and choosing the correct prepositions:Transforming Statements into Questions a) He is working as a doctor.Question: Is he working as a doctor?b) They are working as architects.Question: Are they working as architects?c) She is working as a nurse.Question: Is she working as a nurse?d) I am studying to be: (This is incomplete, but assuming it's a statement of intent)Question: Am I studying to be...?e) We are working in: (This is incomplete, but assuming it's a statement of location)Question: Are we working in...?Choosing the Correct Preposition1. They have lots of picturesa) inb) onCorrect preposition: on (You typically put pictures on a fridge)2. We put the old booksa) atb) inCorrect preposition: on (You typically put books on a box)The exercises you provided appear to be fragmented or incomplete.To provide the most accurate answers, please provide the full statements and questions.Explicación: