填入下面文段空白处的词语，最恰当的一组是 研究先秦诸子著作文本，( ① )研究先秦诸子著作目录版本，( ② )要探讨先秦诸子著作文本和先秦诸子思想之间的复杂关系。先秦诸子著作文本在文体形式上，( ③ )有“语录体”和“对话体”，( ④ )有“论文体”和“春秋体”。同时，先秦诸子著作文本还有“经”“说”“解”的差异，这就( ⑤ )是文体形式的问题了，( ⑥ )涉及文本作者、写作年代、写作地点及其各自表达的不同思想内容。

My grandpa _________ in the city and after he retired, he setteled in the countryside. Now he ______ the life there.

Teachers recommend parents________ their children under 12 to ride bicycles to school for safety.

The life we were used to ____________ since our grandfather died.

I’m going to the post office.–_______you’re there, can you get me some postcards?