根据短文内容，填写所缺单词或用所给单词的正确形式填空。
Welcome to Daqing Wetland
Welcome 1. Daqing Wetland! This is a great place to watch birds. Look at the tall building over there. It 2. (be) the Bird Watching Tower. If you go inside, you 3. (see) many photos on the wall. These photos are about different kinds of birds. Some birds 4. (fly) in the sky now. Some 5. (sit) in the trees.
A kind guide is standing near the window. He is 6. (use) a telescope to look at a red-crowned crane. The crane is eating fish near the river. The guide says, “We must protect these birds. They are 7. (we) friends.”
On the desk, there 8. (be) some books about nature. The books are very 9. (interest). You can read them to learn more.
This place is very beautiful. I hope you 10. (have) a good time here.

1. to 2. is 3. will see
4. are flying 5. are sitting 6. using
7. our 8. are 9. interesting
10. will have