Составить предложение maths he sums now and is doing counting in

He is doing counting and sums in Maths now.

He is not doing counting and sums in Maths now.

Is he doing counting and sums in Maths now?

Who is doing counting and sums in Maths now?

When is he doing counting and sums in Maths?

What is he doing now?

Is he or are you doing counting and sums in Maths now?

Is he doing counting and sums in Maths or in Geography now?

Is he doing counting and sums in Maths now or then?

He is doing counting and sums in Maths now, is not he?