Давайте разберём текст и выберем правильные слова для каждого пропуска:
A. Mary is a hedgehog. It lives in a cage in a big pet shop.
- Здесь используется Present Simple, так как описывается общее состояние. Выбираем "lives".
B. It has been friends with them for a year already.
- Здесь подходит Present Perfect, потому что говорится о действии, начавшемся в прошлом и продолжающемся до сих пор. Выбираем "has been".
C. The mice have got a bigger cage than Mary has.
- Сравниваются размеры клеток, используем сравнительную степень "bigger".
D. Mary is thinking about living with a child now.
- Здесь подходит Present Continuous, так как рассматривается текущее действие или мысль. Выбираем "is thinking".
E. A week ago a child with his parents chose a turtle as his pet.
- Действие произошло в прошлом. Выбираем Past Simple "chose".
Окончательное заполнение:
Mary is a hedgehog. It lives in a cage in a big pet shop. Every morning it gets a piece of fresh cabbage. It has got a lot of friends. Its neighbour on the right side is Fred, the rabbit, and its neighbours on the left side are mice. It has been friends with them for a year already. The mice have got a bigger cage than Mary has. Mary likes the pet shop but it is thinking about living with a child now. A week ago a child with his parents chose a turtle as his pet. Mary hopes that sooner or later it will find its new friend, too.