Hello English students, please select the correct prefixes of the following sentences
1 . Please do not throw that that hairdryer away, I will take it to an electrician and ______ it .
a] use
b} reuse
c} unuse
2. Maya saw who _____ the door that day.
a] unlocked
b] locked
c] did lock
3. I find it ____ that the thieves that took my money are still not arrested.
a] not fair
b] unfair
c] fair