Study

[Belly T]

Q: What is he doing?
A: He studies in his room
or He's in his room doing?

[Casiopea]

Q: What is he doing?
A: He studies in his room.
A: He's in his room studying / He's studying in his room.

Does that help?

[Belly T]

Unfortunately, Casi, my teacher did the vice-versa.
He said that the one above is correct, not the bellow one

[Casiopea]

All right. So, then, what's your question?

[Belly T]

Question is "What is he doing"?

[Casiopea]

I get that part. I was talking about what you had said about your instructor. What would you like us to do?

[Belly T]

To pick up the right answer from the two above
My teacher said the right one is" He studies in his room"

[Casiopea]

To pick up the right answer from the two above. My teacher said the right one is" He studies in his room"

If you look at post #2, you'll find the answer to that question has already been provided.

[Belly T]

Q: What is he doing?
A: He studies in his room.
A: He's in his room studying / He's studying in his room.

Does that help?

That was yours, Casi, here's my teacher's choice:

A: He studies in his room

A: He's in his room studying

[Casiopea]

That was yours, Casi, here's my teacher's choice:

A: He studies in his room

A: He's in his room studying

I understand your question, Belly T. The advice I have is this. You may want to consider approaching your instructor about this. S/he is the only one who can explain the choice made. Possibly, it was an error; possibly, it wasn't. You'll have to check that out with your instructor.

Does that help?