Li Yuchun is______ girl that most of the students are her fans.

My mother spent about 2,000 dollars ______ the piano.[ ]

Do you know something about Lee MinHo?—You mean the most popular actor ______ is from Korea?

It is _______ difficult for us _______ climb up the mountain.[ ]

As far as I know, this man ____ risk anything than lose the ring for his wife.