Here are the sentences that are changed into questions.
1. ¿Prepara la prueba la Profesora Cruz?
2. ¿Necesitamos estudiar Sandra y yo?
3. ¿Practican los chicos el vocabulario?
4. ¿Termina Jaime la tarea?
5. ¿Trabajas tú en la biblioteca?
In Spanish, there is no need to change the word order. Since the problem asks for the change of this order we will use simple steps to do this. Thus, we will form Spanish questions from declarative sentences.
1) Begin with a typical declarative sentence: We start normal sentences with the subject and next follows to the verb.
2) Exchange the order of the subject and the verb: In English, when you say<em> this is...</em> in the simple form you say <em>is this...?</em> in the question form. In fact, the same happens in Spanish. So you, for example, change <em>ésta es...</em> to <em>¿es ésta...?</em> The same process also works for other sentences that don’t fit the <em>this is...</em> standard like<em> la niña es bonita</em> to <em>¿es bonita la niña? </em> 3) Do not worry about <em>do</em>: In English, questions often include the verb<em> do</em>, but the word <em>do</em> is understood as part of the verb in Spanish.