题目内容
the people have become masters of their country science can really serve the people.
A. It is only then; that B. It was that; when
C. It is only when; that D. It was when; then
C
练习册系列答案
相关题目
题目内容
the people have become masters of their country science can really serve the people.
A. It is only then; that B. It was that; when
C. It is only when; that D. It was when; then
C