Поставьте глаголы в нужную временную форму.

Winnie-the-Pooh (to be) the famous creation of Alexander Alan Milne. Winnie (not to be) very clever and (do) a lot of silly things and his love for honey (to be) endless, yet this little bear (to become) everyone’s favourite.
A.A. Milne (to have) a long and successful career writing poems, magazine articles, plays and even a detective novel, but he always (to remember) for creating Pooh, Piglet, Eeyore and Christopher Robin.
In real life Christopher Robin (to be) Milne’s son. When he (to be) a small boy he (to play) with the real Winnie-the-Pooh, a bear his parents (to buy) at Harrods and (to give) him for his first birthday. After the age of four, Christopher Robin (to spend) much of his time in the country, playing in the woods with his beloved Pooh, Eeyore, Kanga, Roo, and Tigger. His parents (not can) spend much time with him during his ‘nursery years’, and the centre of his life (to be) his much-loved nanny.
In his autobiography Christopher Robin (to say) that his father (not to be) very good at relating to children, and to make up for that he (to write) stories about his sons, his toys and his games.
Winnie first (to appear) in book form in Winnie-the-Pooh in 1926 and The House at Pooh Corner.

Правильно заполненный текст:

Winnie-the-Pooh is the famous creation of Alexander Alan Milne. Winnie is not very clever and does a lot of silly things and his love for honey is endless, yet this little bear has become everyone’s favourite.

A.A. Milne had a long and successful career writing poems, magazine articles, plays and even a detective novel, but he is always remembered for creating Pooh, Piglet, Eeyore and Christopher Robin.

In real life Christopher Robin was Milne’s son. When he was a small boy he played with the real Winnie-the-Pooh, a bear his parents had bought at Harrods and given him for his first birthday. After the age of four, Christopher Robin spent much of his time in the country, playing in the woods with his beloved Pooh, Eeyore, Kanga, Roo, and Tigger. His parents could not spend much time with him during his ‘nursery years’, and the centre of his life was his much-loved nanny.

In his autobiography Christopher Robin said that his father was not very good at relating to children, and to make up for that he wrote stories about his sons, his toys and his games.

Winnie first appeared in book form in Winnie-the-Pooh in 1926 and The House at Pooh Corner.

Объяснение употребления времён

1. Present Simple (простое настоящее время):

• is, is not, does, is — общеизвестные факты и описание персонажа.

• is always remembered — страдательный залог, поскольку речь идёт о том, как писателя помнят до сих пор.

2. Present Perfect (настоящее совершённое время):

• has become — действие произошло в прошлом, но его результат актуален в настоящем.

3. Past Simple (простое прошедшее время):

• had, was, played, spent, could not, said, wrote, appeared — события и факты из прошлого.

4. Past Perfect (предпрошедшее время):

• had bought and given — родители купили медвежонка и подарили его Кристоферу Робину до того, как он играл с ним в детстве.

Итого: в тексте используются Present Simple, Present Perfect, Past Simple и Past Perfect, а также страдательный залог (Passive Voice).