根據(jù)對話情景和所給首字母，在空格內(nèi)填入一個適當?shù)膯卧~或縮略 詞，使對話意思完整。
B: David, w do you often do on Saturday?
D: I u do my homework and sometimes help Mum w housework.
B: What a Sunday?
D: I like s . So I often go swimming on Sundays.
B: D your sister Nancy go w you?
D: No, she d . She I shopping. She often g shopping with my mother.
B: You have a happy w , David.
D: That's r .
