Answer:

1. before I'm just copying what the dancers doing but now my mom told me that I'm really good on dancing.

2. My mom is the one who decorated our house for my birthday party that's why everywhere was full of colorful balloons.

3. Our teacher got mad that's why we keep quiet.

4. I've never gets bored because my friends are so cheerfully.

5. we talked excitedly about the birthday plans.

Explanation:

Hope it helps:)