问题

_____ do you telephone your parents? — Once a week, at least. [ ]
A: How soon
B:AIDU_
C: How many
D: How often
B:AIDU_
C: How many
D: How often
正确答案是:
同类题型
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_________ seems no sense in complaining.We should take action now.
No matter how I tried to read it, the sentence didn’t ______to me.