Additional Task Animals are essential in our life.What roles can animals play in our life?Give examples to illustrate your points. Animals can also teach us lessons about the spirit or essence of life.Can you give some expressions such as“as hardworking as ants”? You may invent some new sayings. Unit 4,Book 4  Animals are essential in our life. What roles can animals play in our life? Give examples to illustrate your points.  Animals can also teach us lessons about the spirit or essence of life. Can you give some expressions such as “as hardworking as ants”? You may invent some new sayings. Additional Task Unit 4, Book 4