Найти ошибку в данном предложении "my mother won't let anybody to think ill of him"

she and her family live in london.

потому что это множественное число. они живут в лондоне.

there once was a badger. he liked to do exercises in the morning, run, jump! he believed that he was happiest in the world of badgers.one day he went swimming in the river. swim, swim and came across something acute.on thought that this shark. badger and just saw. ran it and told it to his friends. they went to this place and saw that nothing dangerous is an ordinary fall.

and since then,  the badger  was considered  a