Choose the correct variant:

I want you to ___________ my father. I'm sure you'll like him.
1. Introduce
2. meet
3. talk
My _______________ brother is a college student.
1. senior
2. elder
3. older
My name is Joshua, but you can ______________ me Josh.
1. name
2. say
3. call
There are three ______________ in my family.
1. members
2. people
3. humans
My mother works ___________ an elementary school.
1. on
2. over
3. at