下列各组单词中,画线部分发音不同于其它三个的单词是______。
You could ask the teacher for help. ________________ Teachers are always helpful.
--- My dream is to be a scientist. --- Sounds good. I hope it will .
Would you like to go fishing with me? Sorry. I have lots of homework ____
Linda used ______long hair. Now she has short hair.
The children are _______ in studying.