1.1.What do they do first on Chinese New Year’s Eve?

A Cook food.

B Clean the house.

C Listen to music.

D

解析：选B。B 细节理解题。根据短文“We clean the house first.”可知，他们除夕夜最先做的事是打扫房子。故选B。

2.2.Who makes the big dinner?

A Mom and grandma.

B Dad and grandpa.

C The writer.

D

解析：选A。 A 细节理解题。根据短文“Then my mom and grandma cook a big dinner.”可知，做丰盛晚餐的人是妈妈和奶奶。故选A。

3.3.What do they do after eating dinner?

A Read books.

B Play games.

C Watch TV.

D

解析：选C。C 细节理解题。根据短文“After dinner, we watch TV and chat.”可知，他们吃完饭后会看电视。故选C。

4.4.Why do they stay up late?

A To play games.

B To welcome the new year.

C To read books.

D

解析：选B。 B 细节理解题。根据短文“We stay up late to welcome the new year.”可知，他们熬夜的原因是迎接新年。故选B。