M: Lucy, I've been looking for you, where have you been? ,F: I went to help watch my sisters 3 daughters. ,M: That must have been hard to deal with. ,F: That's what I'd expected, but it turned out that we had a great time together.
(A) M: It is very common to take care of friend's children and earn some money. (B) M: I thought it was hard, but now I think it must be interesting. (C) M: It must be very interesting for you to take care of children. (D) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that?
D