C. I think I changed a lot.
D. I think our school changed a lot.
E. I think our shopping way changed a lot.
（1）
Before, I was not an active boy. Now, I'm active. I have many friends. Before, I couldn't get up early, Now, I get up early, sometimes at four. I like the changes!
（2）
Before, the air in our city was not clean, and the sky was not always blue. We couldn't see the stars at night. But now, we have many trees. Our city becomes more beautiful!
（3）
Before, we didn't have Robin. Now, I stay with him every day. He helps me a lot. And I have Max, another family member.
Before, he was small. Now, he is bigger. He runs after me every day. I love him.
（4）
Before, there was no gym in my school, we couldn't run or jump during the rainy days. Now, we have a big one. Before, there was no canteen, we ate lunch in the classroom. Now, we have a nice one. I like it very much.
（5）
Before, we had to go to the shops or malls to buy things. Now, we can buy clothes, food, toys and so on, almost everything online. Before, we had to take money for shopping. Now, we just need to take a smart phone.
