Answer:
3. No dejes las maletas.
4. No pierdas el vuelo.
5. No olvides el pasaporte.
Explanation:
1. Sabes
2. Conoces
3. Conozco
4. Se
5. Conozco
It is correct the last word is intellgente which makes this a noun adjective agreement.
We read it as [It is] eight thirty.
In Spanish, it reads as [son] las ocho y media
las ocho = eight
y media = half. since there is 60 mins in an hour; 30 minutes is half of an hour.