How often do you eat out?-- but usually once a week.A. Have no ideaB. It dependsC

问题补充：

--- How often do you eat out?

---- , but usually once a week.

A. Have no idea

B. It depends

C. As usual

D. Generally speaking

答案：

A. Have no idea

(答案→)B. It depends

C. As usual

D. Generally speaking

解析：词义辨析。Have no idea我不知道；It depends视情况而定；As usual像通常一样；Generally speaking一般说来。句意：你们多久出去吃一次饭？视情况而定，但是通常一周一次。选B。