The frozen waterfall has attracted floods of tourists to_______ the natural beauty.
27.I don't know_____________makes her afraid of having her business discussed.
28.Which sentence is wrong?29.
33.I don't think_____________difficult for a Chinese student to master a foreign language within five years34.
35..It's the second time you_________late this week.36.
37.It will not be__________we meet again.38.