1) The student find him very happy.
Forme négative : The student doesn't find him very happy.
2) Mr Bruno is optimistic or pessimistic.
Forme interrogative : Is he optimistic or pessimistic ?
3) They have many opportunities.
Forme négative : They don't have many opportunities.
4) Native Americans often leave the reservation.
Forme interrogative : Do Native Americans often leave the reservation ?
5) The student can succeed.
Forme interrogative : Can the student succeed ?