The proposals they put at the meeting were much significance to our plan’s being carried out smoothly.
A. out; of
B. up; for
C. forward; of
D. down; for
网友回答
A. out; of
B. up; for
(答案→)C. forward; of
D. down; for
解析：他们在会上提出的建议对我们顺利实施这个计划有着重大的意义。put forward意思为“提出”; be of significance意思为 “有意义的；重要的”, be of +抽象名词, 相当于这个名词的形容词, 即此处相当于significant。