My book printed. Let practic A : What is she/he doing? B : I'm_____________________ ???? ----> B : She is stuyding.

Hello, Yeon Hwa!

It should have been like this:

Let's practice:

A: What are you doing?

B: I'm _______________ .                -------> I'm studying. or I am studying.

OR

A: What is she/he doing?

B: She _____________ .            --------> She is studying.