A．和谐教育思想 B．教学过程最优化C．教学发展观 D．全面发展观苏霍姆林斯基的教育思想是( )。……

单项选择题I'm tired out. I ______ all afternoon and I don't seem to have finished anything.

单项选择题I have to delay（）the letter.

A.to answer
B.answering
C.answer
D.answered

单项选择题No sooner had he finished his talk______he was surrounded by the workers.

单项选择题普通中小学教育的性质是( )。

单项选择题高中英语课程的目标共有______个级别的目标要求，其中第______级是高中阶段必须达到的级别要求。