问题补充:
---How often do you eat out?
---, but usually once a week.
A. Have no idea
B. As usual
C. It depends
D. Generally speaking
答案:
A. Have no idea
B. As usual
(答案→)C. It depends
D. Generally speaking
解析:考查交际用语:A. Have no idea不知道,B. As usual象平常一样,C. It depends那就看情况而定了,D. Generally speaking一般来说,句意是:--你多长时间出去吃一次?--那就看情况而定了,但通常是一周一次。选C。