1. We have the architect that designs the layout and build of the house.
2. We have the contractor that contacts with the carpenters who usually are the ones building the house.
3. We have the carpenters who build the house.
4. We have the land surveyors that survey the land to make sure boundaries, and protocols are being followed.
There's some. You can also talk about interior designers that help finish the house on the inside regarding how you want your home to be.
6. This sentence is indicative; the direct object pronoun (lo) must come after the subject and before the verb.
Answer: Te lo doy.
7. Same as above, the direct object pronoun (la this time) comes before the verb.
Answer: Se la compra.
8. This sentence is in the imperative mood; the parts of the sentence will go action + subject + object.
Answer: ¡Dimelo!
9. This question is asking which sentence is in passive voice. The sentences are: 1) the book was written by Cervantes, 2) Cervantes wrote the book, 3) the book wrote Cervantes. Passive voice is when the subject is acted on by the verb.
Answer: El libro fue escrito por Cervantes.