Answer my questions

What is it? (Spell correctly)

A study of a particular subject done over a period of time, especially by students (7 letters)

You travel to a new place to learn about it or become familiar with it (7 letters, start with E)

What is the boy doing? (6 letters, starts with A)

How big is the apple? (8 letters, stats with E)

What can you turn on and of (5 letters)?

What can ears do?

You choose something, especially after thinking carefully about several possibilities.