社会阶级的消灭是以( )为前提的。
A. 生产资料公有化
B. 社会化大生产
C. 民主政治发达
D. 生产高度发展
1.____ some students, the teacher entered the hall.
A. Following
B. Followed
C. Being followed
D. Having followed
____, and he had to go back home.
A. Day having broken
B. Night had fallen
C. The day had broken
D. Night fallen
He did all this to make her ____, so she was very angry with him.
A. laughed
B. a good man
C. laughing
D. laughed at