ответ:1) Paul said (that) he was going to the park with his brother next day.
2) Kim said (that) she hadn't seen David
3) Amy said (that) she hadn't written the message yet
4) My friend asked me whether I lived with my parents
5) I asked him if it had been too hard to find his room
6) She asked me not to tell Sara
Объяснение: В reported speech ми змінюємо час цитати, наприклад Past Simple i Present Perfect на Past Perfect. Не забуваємо змінювати займенники та обставини часу. Дуже хороше пояснення з тестами тут: https://www.perfect-english-grammar.com/reported-speech.html
1)
Shelf-shelves;baby-babies;house-houses;church-churches;mouse-mice;tooth-teeth;child-children;toy-toyes;photo-photoes;sheep-sheep;potato-patatoes;man-men
2)women-woman;feet-foot;knives-knife;boxes-box;people-person;deer-deer;boys-boy;tomatoes-tomato.
3)
b.They have 2 geese.
cWe eat 4 potatoes every day
dThey are babies.
eHis friends like those mice.
4)
1loves
2don't live
3Does tom have
4do they play
5doesn't want
5)
1 Do my parents work in a big office?
2 Where do my parents work?
3 What size is office where my parents work?
4 What do my parents do in a big office?
5Who does work in a big office?