根据短文内容和所给中文提示，用单词的正确形式完成下列短文。
   The Arctic is a land with long winters and short summers.It has some of the （1）

worst

worst

（最差的） weather on Earth.Humans have lived there since thousands of years ago.So，how did they （2）

manage

manage

（设法做到） to live in the Arctic under such terrible conditions？
   The（3）

first

first

（第一） people of the Arctic in North America were the Inuit.They came from Russia by crossing the Bering Sea.They hunted animals because（4）

crops

crops

（庄稼） couldn't be planted.To live in the cold Arctic，they had to watch things around them （5）

carefully

carefully

（仔细）.They noticed changes in the （6）

wind

wind

（风） and sky，then tried to guess what the weather would be like that day.It was also （7）

necessary

necessary

（必要的） for them to watch how the animals lived.In summer，they hunted groups of caribou because it was more difficult to find seals than in winter.At the same time，the Inuit learned to make snow houses.In fact，they had to make （8）

everything

everything

（每件东西） they needed.
   Today，the Inuit no longer depend on hunting as they （9）

once

once

（曾经） did.They also do not need to move from one place to place all around the year.They now live in communities.They （10）

are connected

are connected

（连接） to the world by televisions，telephones and the Internet.