Arbor Day

黄召平

Its Arbor Day， and Marla and Tio are planting a tree in their backyard. Their parents are watching TV in the living room， and they dont know what the children are doing. Marla and Tio have learned about Arbor Day in school. Their teachers have told them trees are important to the environment because they create oxygen and provide a home for birds and other small animals. Now， the kids want to surprise their parents by planting a tree in the middle of the backyard. They hope their parents will be happy.

1. Question： Why are trees important to the environment？

2. Mixed-up Sentence Exercise（单词组句）：

（1） their watching the living TV in parents are room

（2） the to surprise their kids want the middle parents by tree in of the backyard planting a

答案： 1.（略） 2. （1） Their parents are watching TV in the living room. （2） The kids want to surprise their parents by planting a tree in the middle of the backyard.endprint