Answer:
Verbs in infinitive form in Spanish are impersonal verbs, in other words they do not conjugate with any personal pronoun and are used to indicate the action done without specifying who did it.
Depending of the verb, the infinitive form is built adding the sufixes:
"-ar", "-er", "-ir"
Sufix: "-le" comes before a direct noun where the action is applied.
Explanation:
barrer las escaleras
apagar la cafetera después de
desayunar
recoger unos dulces en la tienda de la esquina
pasar la aspiradora en los cuartos de los niños
sacar la carne congelada (frozen) del refrigerador
ir a
comprar al supermercado antes de las tres
elegir productos baratos en el supermercado
cambiar el foco (light bulb) de la lámpara de la cocina
quit"ar" + "le" el polvo a los muebles del salón
I don't know, I can't understand what the question says and I speak Spanish
I can give you help for number 2. Not that i don't know the rest but it's best that you learn by what you can do. The example they give you for part B (la obra fue larga) means, the work was long. They give you an image to show people working. For the others, they give you an idea on what to write, so they can be just about anything, so there's no right or wrong. I'll give you an example for number 2; they show you books. It could be words that are hard or HW. For example: La tarea fue dificil. If there is any other you are still stumped on, let me know so i can help.