题目内容
(请给出正确答案)
[主观题]
Paul: Bob, ________________?Bob: Oh, that's my father! And beside him is my mother.
Paul: Bob, ________________?
Bob: Oh, that's my father! And beside him is my mother.
A、what is the person over there
B、who's talking over there
C、what are they doing
D、which is that
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