They’re correct, despertémoslos means let’s wake them up and despertémonos means let’s wake up.
I'm gonna write in the correct form the ones wrong and leave a blank the right ones.
1. _
2. _
3. _
4. _
5. Acuéstate temprano
6. Llega a tiempo (I guess you meant arrive in time?)
7. No abandones la escuela (I guess you meant don't quit school?)
8. Pon atención en clase (it can also be: "PRESTA atención en clase" the r in presta converted it in infinitive)
9. No dejes tu tarea en casa
10. No duermas en clase (No dormir is also infinitive)
