The key to exercise solutions in chapter 12 - Grammar for the textbook New Headway Intermediate - Workbook with authors Liz Soars, John Soars and Paul Hancock from Oxford University Press
Question
Report the questions.
Answer
She asked me what I was doing.
She asked me if I wanted to go out for a walk.
He wondered why I was crying.
He asked me whether / if he could borrow my car.
The customs officer inquired where I / we had come from.
She wanted to know how long I was going to be at the gym.
He wondered if / whether I'd bought any milk.
She asked us whether / if we would be back early.
She wanted to know how much it cost / costs to fly to New York.