Перевести предложения в косвенную речь

3 He asked me if I had telephoned my mother.
4 She wondered if the box was мейд of cardboard.
5 He wanted to know how much it had cost.
13 He wondered where I had stayed in Paris.
14 She wanted to know if I had had any letters.
15 He wanted to know if I liked having holidays abroad.
16 She wondered if I had seen the accident.
17 He wanted to know which school I had gone to.
18 She wondered when I had started learning Spanish.
19 He wondered if I were French.
20 She wanted to know if I had ever been to Japan.