A teacher said:
"Mary, I'd like you to give me a sentence beginning with 'I', please."
Mary thought for a few seconds and then said:
The teacher interrupted her and said:
"No Mary, you cannot begin a sentence with 'I is' - you must use 'I am'."
Mary looked upset and said:
The teacher shouted:
"Give me a sentence beginning with 'I am',
Mary shrugged her shoulders and said:
"I am the ninth letter of the alphabet."