M: Maybe it was the fish or meat we ate. ,F: Yes, it might have been. ,M: Or the soup. ,F: No, it couldn't have been the soup because I didn't have any. ,M: Of course. We sat in the sun for a long time. I suppose it could have been the sun. ,F: Yes, it might have been. But we've got used to sitting in the sun. ,M: That's true. Now what else did we both eat? Only those lovely pears I bought. It couldn't have been them. We're used to eating pears and you washed them. ,F: No, I didn't. I thought you had. ,M: I didn't wash them. I was sure you did. It must have been the pears then.
(A) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) F: How could we lose a pair of sunglasses? We must lost them in the bathroom that we washed the pears. (C) F: I can't believe that neither of us washed the pears. (D) F: I can't believe that neither of us washed the pears and we didn't feel discomfortable because of it.
C