根据句子意思及所给提示完成下面各题。

1. My father often _____ ( go)  home at 7 p. m.

2. My mother often _____ ( do)  some shopping on Saturdays.

3. I often surf the Internet _____ ( one)  a week.

4. How often _____ she _____ (exercise)?

官窑器必须有众所周知“金丝铁线”、“聚珠赞珠”和“紫口铁足”。