At the weekend, I am always busy but happy. 

On Saturday morning, I clean my room with my mom. It is not difficult, and I feel happy. In the afternoon, I go to the park with my best friend, Lily. We play sports there. Sometimes we fly kites.

1.1. On Saturday afternoon, I go to the park with ________.

A my mom

B my parents

C Lily

D my grandpa

解析：选C。C细节理解题。文中提到“In the afternoon, I go to the park with my best friend, Lily.”，可知是和Lily一起去公园。故选C。

2.2. On Sunday, I often visit my ________.

A friends

B teachers

C cousins

D grandparents

解析：选D。D细节理解题。原文“On Sunday, I often visit my grandparents with my parents.”说明周日经常去看望祖父母。故选D。

3.3. My grandpa can cook ________ food.

A cheap

B delicious

C cold

D hot

解析：选B。B细节理解题。句子“My grandpa can cook delicious food for us.”指出爷爷会做美味的食物。故选B。

4.4. I read a storybook on ________.

A Sunday evening

B Saturday morning

C Sunday afternoon

D Saturday evening

解析：选A。A 细节理解题。第三段描述的是星期天的活动，根据“On Sunday”和“In the evening, I do my homework and read a storybook before going to bed.”可知，我在星期天的晚上读故事书。故选A。