根据短文内容和所给中文提示，在空白处写出单词的正确形式。每空限填一词。

   Nowadays, camping has been popular among young people. It's a great way to be outside and enjoy the nature. Whether you ____(更喜欢) to be in the woods, mountains, or by the river, you are sure to have a wonderful experience when you go camping. Here is some advice ____(为了) camping.

   Fire may be ____(危险的) , so just use fire out when you must. Make sure to put the fire out when you don't use it.

   When you are talking, keep your ____（说话声） down. If you talk loudly, you may disturb (打扰) other people and you will ____(也) miss the chance to see wild animals outside.

   It is necessary to put up your tent only in safe areas. If you put up your tent in other areas, you may get into trouble. Remember to do it for your ____(安全).

   Don't forget to take your camera so that you won't miss the wonderful natural wonders. Later, you'll understand ____(多么) nice they are. Make sure your camera has enough power.

   People often get ____（丢失）in the forest . It's a good way to take a map that ____(帮助) you to get the right ____(方向). Now, people usually take GPS with them. Maps and GPS can help you find the way easily.