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
— 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