We're staying with Lingling's uncle in Hunan Province, and I'm having ____ (冠词) wonderful time here in Zhangjiajie. It's a magic land of mountains, forests and ____ (river). It's very large, about 480 square kilometres. It's famous  ____ (介词) the strange shape of its tall rocks. Some of them ____ (look) like humans while others look like wild animals. Last night we camped by a small lake. During the night, we____ (hear) a noise! It woke everybody up. We thought somebody  ____ (be) moving about. Lingling's uncle said it was an animal. We came out without  ____ (make) any noise, ____ (连词) found it was just a hungry monkey looking for food. This morning, we climbed Mount Tianzi! From the top we hoped to see the lakes and forests. But it was a pity that it was____ (cloud). We could only see the mountain tops above the clouds. Tomorrow we're going to Dongting Lake, ____ (冠词) second-largest freshwater lake in China. We'll be back home next week! Wish you were here.

电视纪录片《第三极》首次聚焦青藏高原，与南北两极比，它是唯一有人类生存活动的“极地”地带．读图，回答下列问题。