下列一组单词中,划线部分发音不同于其它三个的单词是_______。
In the piano contest, my brother didn’t play well and I did __________.
Mike is a good boy. He often _________ to help his classmates.
Lao She is one of _____________ of the twentieth century.
__________ you go jogging, ___________ you will feel.
Let’s try to speak English as __________ as possible.