题干
— Why was Professor Zhang unhappy recently?
— Because the theory he insisted on _____ wrong.
A：proved
B：proving
C：being proved
D：was proved
答案(点此获取答案解析）
A
— Why was Professor Zhang unhappy recently?
— Because the theory he insisted on _____ wrong.
A：proved
B：proving
C：being proved
D：was proved
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