In the following passage some words have been deleted. Fill in the blanks with the most suitable option.

One of the most famous people in the world, Walt Disney left school at the age of sixteen and studied art for a (1)______ period of time. By the 1920s he had already started to produce cartoons in Hollywood in (2)______ with his brother, Roy. Walt Disney is perhaps best known for his (3)______ cartoon character, Mickey Mouse, who first (4)______ in a cartoon film called ‘Steamboat Willie’ that was released in 1928. Another very (5)______ cartoon film is ‘Snow White and the Seven Dwarfs’. When it was released in 1937, it was the first full-length animated feature film in colour and with sound.