Из косвенной речи:

"Why is she working so late?" he asked.

"Is she British?" he asked.

"What did she buy?" he asked.

"Will you have something to eat?" she asked.

"How did you do that?" she asked.

В коссвенную речь:

Is anything wrong with you?

Do you sometimes have headaches?

Are you taking any medicine now?

В коссвенную речь:

He asked hher w hy she was working so late.

He asked them if she was British.

He asked them w hat she had bought.

She asked them if they would have something to eat.

She asked them h ow they had done that.

They wanted to know if something was wrong with them.

They wanted to know if they sometimes had headaches.

They wanted to know if they were taking any medicine then.