问题
选择题
— Why was Prof.Yang unhappy these days?
— Because the theory he insisted on ________ wrong.[ ]
A. proved
B. proving
C. being proved
D. was proved
答案
答案：A
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— Why was Prof.Yang unhappy these days?
— Because the theory he insisted on ________ wrong.[ ]
A. proved
B. proving
C. being proved
D. was proved
答案：A