Many Americans mindlessly oppose hunting. They do so even in
cases where animal populations are dangerous high. In           1.__________
some areas of Alaska, wolves have become so rare that they      2_______
are running out of hunting ground and prey heavily on 
moose, deer, and occasionally dogs. In past, game               3_________
managers curbed wolf populations for trapping and aerial        4______
hunting without wiping away the species. Still, whenever        5__________
they propose do this nowadays, they receive tens                6_______
of thousands letters of protest. Growing deer populations in    7_________
parts of California threat to starve themselves out. Seaotter   8________
colonies, booming in the Pacific coast, are fast running        9___________
out of food, too, as good as putting commercial fisher-         10___________
men out of business.
答案：
1.dangerous > dangerously
2.rare > numerous
3.in past > in the past
4.for > by
5.away > out
6.do > doing
7.thousands letters > thousands of letters
8.threat > threaten
9.in > along
10.good > well