问题

My father always warns me that there is no such thing as a freelunch because we can’t get _________ for nothing
A:I can’t believe my ears
B:I’m so glad to hear that
C:What presents do you want
D:Many happy returns of the day!
B:I’m so glad to hear that
C:What presents do you want
D:Many happy returns of the day!
正确答案是: