Have you been to the Great Wall—Perhaps not in my memory; ________， it might have been during the early childhood.

Usually I don’t allow________in my office，but yesterday I allowed him________ here

Mr Fred asked me I was going to speak at the meeting and I said “Yes”.

The machine is easy to _______if you follow theinstructions.

依次填入下面一段文字横线处的语句，衔接最恰当的一组是（ ）中国的教育正处在深化改革、谋划长远的关键时期。________，________，________。________，________，________。要培养他们，请从摘掉功利教育的“绿领巾”开始。①而未来中国社会真正需要的②但在急功近利的社会环境影响下③最容易被世俗“劫持”而沦丧根本的育人理念④而是遍布社会各个阶层的一代健康、成熟的合格公民⑤不是少数自我强大的精英⑥教育很难独醒