根据所给图片, 从方框中选择合适的介词或介词短语, 完成下列句子。
on in front of behind in between |
1.The dog sits
________ two cats.

2.There are some cute pictures
________ the wall.

3.Look! There are three birds
________ the tree.

4.Bella is a shy girl. She often stands
________ her mother.

5.Lucy is
________ Jack.