Mrs. Black doesn't believe that her son is able to design a digital camera,____ ( )
A.is he
B.isn't he
C.doesn't she
D.does she
正确答案是D
Mrs. Black doesn't believe that her son is able to design a digital camera,____ ( )
A.is he
B.isn't he
C.doesn't she
D.does she
正确答案是D