The indefinite article would be el which is he in spanish because it ends with an o which means it is a male item
1. estantería
2. camas
3. bañera
4. microondas
5. (I can't figure out the fifth one, but you can always use a spanish word unscrabler.)
6. silla
1. tiene (possessive description)
2. sepa (non-realistic description; an ideal)
3. está (possessive; the clinic (not a clinic))
4. ayude (ningún, alguien, and nadie are always subjunctive)
5. pueda (an ideal; a surgeon (may or may not exist) and not the surgeon)
It's a coordinada sentence