A. what is the teacher’s office B. what the teacher’s office is C. where is the teacher’s office D. where the teacher’s office is
问答题什么是环境？如何理解环境在人的身心发展中的作用？
问答题教学目标
问答题课程计划
单项选择题—Do you mind if I smoke —（）.
A. Why not B. Yes, help yourself. C. Go ahead. D. Yes, but you'd better not.
单项选择题He said, We （）be proud of working hard. We mustn't be lazy.
A. must B. needn't C. may D. can't
