一 Could you tell me you will come back?
— In ten minutes.
A:how soon
B:how often
C:how long
D:how fast
A. sister B. father C. brother D. doctor E. teacher F. pupil
中华人民共和国的成立开辟了中国历史新纪元,中国历史由此进入了社会主义初级阶段。