阅读下面材料，在空白处填入适当内容(不多于3个单词)或括号内单词的正确形式。【辽宁卷题型】
Ryan：Did you have a good vacation, Katie?
Katie：Yeah! It was__1__(excite)？Probably my__2__ exciting vacation ever!
Ryan：Wow! What did you do?
Katie：I took a nature__3__(冒险) tour.For the first part, we went__4__(hike)．It was so much fun! We hiked all the way__5__these beautiful waterfalls.I took lots of pictures.
Ryan：Sounds great.So, what else did you do on the tour?
