9．He was angry at his good friend’s _____ (模棱两可的) attitude towards this problem．

8．The drug is effective but has a _____ (倾向) to cause headaches．

7．The government has f_____ a rapid increase in unemployment in the coming year and is trying to avoid it．

6．The p___ in the singing competition all have a great deal of talent．

5．He is an outdoor e_____, who goes skiing in winter and goes hiking in summer．

4．Bungee jumping can be very dangerous, so the organizers are very careful so as not to c_____ safety．

3．Maggie takes her work seriously and is quite s_____ to criticism．

2．Harry has c_____ feelings about his new life．At first, he enjoys it, but later, he learns the secret that his parents were killed by one of the school’s evil wizards, Voldemort．

1．There are a lot of people who can’t d_____ between certain colors．Those people are said to be color-blind．