问题补充:
From my point of view,the theory thatby the scientist is not quite scientific.
A. was risen
B. brought up
C. had been raised
D. was put forward
答案:
A. was risen
B. brought up
C. had been raised
(答案→)D. was put forward
解析:D,put forward 提出,而且此处应该用被动语态