Answer: These are the right answers:
7. limpien
8. pongan
9. salgas
10. haga
11. que vayamos
12. que estudien
13. pasen
Explanation: Just to elaborate a little on the answer, it can be added that in this exercise they are asking you to complete the sentence with the right form of the verb in brackets. The mood that you must use is the subjunctive, which refers to information or actions that are more a possibility than a fact: "It is important that <em>you clean</em> the house," "I advise you <em>to not go out</em> with him," and so on.
1. Soy de Puerto Rico.
2. Una chica de Portugal es portuguesa.
3. Hoy estamos triste.
4. Rosa y Marta están muy ocupadas.
5. No, no estoy feliz hoy.
6. Una chica alemana es de Alemania.
7. Diana es muy amable.
8. Las chicas japonesas son de Japón.
9. Las chicas de Bolivia son bolivianas.
10. Nadie está enfermo hoy.
En el future, yo sere una mujer de negocios
D. Haz la cama is the answer.