I find it astonishing that John ______ be so rude tome.— Not astonishing at all. He is always rude to others.

Caroline doesn’t have a gift for music，but she ______ it with hard work.

What I want toto teenagers is that being addicted to the Internet will to some extent do harm to both mental and physical health．

Only_______ stand-up comedians have become famous as television and film actors later on in life._______ person is Billy Crystal.

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。