People
It is the person who researches and writes articles for magazines or newspapers
Journalist
The verb used to express necessity
Need
Is the person who works in hospital and helps people and doctors
Nurse
Auxiliary verb to express ability in present
Can
Is the person who save people and put out fires
Firefighter
Auxiliary verb used to make questions in past
Did
Is the doctor of the animals
Vet
Verb used to give advice
Should
Work in a school and teach people
Teacher
Verb used to express obligations
Must