根据上下文内容在每一条横线上填上一个适当的单词。
(B=Ben D=David)
B: David, 1. _ do you often do on Saturdays?
D: I 2. do my homework and sometimes I help Mum 3. housework.
B: How 4. Sundays?
D: I like 5. . So I often go swimming on Sundays.
B: 6._ your sister Nancy go 7.____ you?
D: No, she 8. _ . She 9. _ shopping. She often 10. shopping with my mother.
B: You have a happy weekend, David.
D: That's right.
