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)?

白术的功效是（）

A．补气升阳、益气固表

B．补气养阴、清火生津

C．大补元气、补肝益肺

D．补气健脾、燥湿利水

E．益气养阴、补脾肺肾