下列各组单词中,画线部分发音不同于其它三个的单词是______。
—Jack works very hard, but he can’t get good grades in exams.—That’s because he can’t study____.
—You are always full of energy (活力). Can you tell me the ____?—Taking lots of exercise every day.
Lin Feng has to make a living by himself because his parents have ______ for years.
—How do you like the talk show?—I think it’s ______, but some people think it’s so ______.
—With _____ did you watch the 2014 World Cup Opening Ceremony ( 开幕式)?—A friend of mine.