---- How often do you eat out? // ---- , but usually once a week.
A. Have no idea
B. As usual
C. It depends
D. Generally speaking
网友回答
A. Have no idea
B. As usual
C. It depends
D. Generally speaking
解析：考查交际用语。Ａ不知道；Ｂ和平时一样；Ｃ看情况；Ｄ一般说来；句意：—你多久出去吃一次饭？—看情况，但是通常是一周一次。故Ｃ正确。