=> Answer: 

1. Father   2. Mother    3. Sister  4. Brother

B.Circle the correct words.

1. Dave and Chris Cason ( have / has ) 16 children.

2. The oldest, Jessica, ( have / has ) 15 younger brothers and sisters.

3. There ( are /is ) no twins in the family.

4. Does Mr. Cason ( have / has ) a large family?

5. Yes, he ( do / does ).

=> Answer: 1. have   2. has    3. are     4. have    5. does

=> Answer: 

- When you have big family, you will get many presents on your birthday

- When you live in big family, your holidays are more fun because you will have chance to play with cousins

- When you live in big family, there are lot of noise because there are many people in the house

- When you live in big family, you fight more because each people has different opinion

- When you live in small family, you will feel lonely because there is few people 

- When you live in small family, you will get fewer presents on your birthday

- When you live in small family, there is more space for you to do whatever you like

- When you live in small family, there is not a lot of noise