How often do you call your parents ? -__________,but usually once a week.

问题描述:

How often do you call your parents ? -__________,but usually once a week.
A.Forget it B .Once in a while
C. It depends D.I've no idea
正确答案是C. 请帮忙详细分析每一个选项

A 忘记它,不是提了
B 隔段时间一次
C看情况,视情况而定
D我不知道
所以C最符合