Ⅳ.阅读下面短文,在空白处填入括号内单词的正确形式。
A group of hiking lovers once decided to climb an unfamiliar mountain. Since the weather report said it might be 16. (storm), Jack's brother warned them of the challenges they would face. However, they were too excited 17. (listen).
In the beginning, everything went well. The sun was shining brightly and they 18. ______ (chat) and laughing as they walked. But the wind grew stronger as they went higher. All of a sudden, they found they took a wrong path(路线). Realizing things were going wrong, they felt helpless. Jack, the group leader, grew worried. He remembered 19. ______ (read) about the area before. Now, he realized they were in trouble, especially with limited(有限的) 20. ______ (supply).
Then it started to rain heavily while they were trying to find the way back. They all got wet soon. It wasn't the 21. (bad). The muddy ground made it difficult for them to move forward! When the rain slowed, they continued to find their way back, but being lost and cold, they felt even 22. (unlucky).
23. (thankful), a rescue team was sent out when they failed to return by nightfall, and Jack became their hero for keeping everyone calm. From this experience, they learnt a valuable lesson about the importance of 24. (prepare) and caution(谨慎). They told 25. (they) that they would not make the same mistake again.

16.stormy
17.to listen
18.were chatting
19.reading
20.supplies
21.worst
22.unluckier
23.Thankfully
24.preparation
25.themselves