Question

—How often do you eat out？
—　　　　，but usually once a week.

A．Have no idea	B．It depends
C．As usual	D．Generally speaking

Answer 1

B

对话问句用how often提问频率“隔多长时间一次？”答语中出现usually once a week就是对how often的回答，而but又使得答语在语意上前后转折，因此选择It depends，意思是“得看情况”。