仿写例句。
Yesterday I walk to the zoo.
Today I walk to the zoo.
Tomorrow I am going to walk to the zoo.
（1）Yesterday he brought a star for the tree.
Today he _____________________________.
Tomorrow he _____________________________.
（2）Today we play in the playground.
Yesterday we ___________________________.
Tomorrow we ____________________________.
（3）Tomorrow she is going to buy a star for the tree.
Yesterday she _____________________________
Today she ________________________________