here u will find some examples
 
 
a) a person must eat in order to live
b) if you want to become a doctor, you must  go to medical school for many years
c) I don’t have enough money to take the bus,so I have to walk home
d) He has to go to a meeting tonight
e) a person has to get married in order to lead a happy and fulfilling life
 
 
now its your time to participate 
good luck

