根据对话情景和所给首字母，在空格内填入一个适当的单词，使对话意思完整

B: David, what do you often do on Saturday?

D: I usually do my h and sometimes h my mother do housework.

B: What about Sunday?

D: I like s . So I often go swimming on Sunday.

B: D your sister Nancy go w you?

D: No, she doesn’t. She l shopping. She often g shopping with my mother.

B: You have a happy w , David.

D: That’s right.

B: By the way, this weekend is coming. What are you g to do this Sunday?

D: Swimming.

B: Shall we go together?

D: Of c .

B: See you Sunday.

D: See you.

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