问题
选择题
Mrs. Black doesn't believe her son is able to design a digital camera, ______? [ ]
A. is he
B. isn't he
C. doesn't she
D. does she
答案
答案：D
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Mrs. Black doesn't believe her son is able to design a digital camera, ______? [ ]
A. is he
B. isn't he
C. doesn't she
D. does she
答案：D