阅读短文，然后根据短文内容完成句子。
Look at the picture on the blackboard. We can see a house in it. Behind the house there is a hill with
many trees. Near the hill we can see a river. There are three boats in the river. One is blue, the other two
are yellow. There are some Young Pioneers in those boats. Near the house we can see a big tree.
Under the tree there is a small bus. It's a white bus.
1. There is a _____ on the _____ .
2. _____ is the hill? It's _____ the house.
3. There are a lot of _____ on the hill.
4. Some _____ _____ are in the boats.
5. Is there a _____ _____ bus under the big tree? Yes, there is.