【小题1】The old man is so angry. He can’t say a word.（连成一句） The old man is too angry to have

【小题1】The old man is so angry. He can’t say a word.（连成一句）
The old man is too angry to have had since What is used say a word.
【小题2】I bought the bike ten years ago. (同义句)
I should be hung have been the bike 　 ten years ago.
【小题3】The key is used for locking the front door.（就划线部分提问）
　 　 the key 　 for?
【小题4】 You should hang the curtains across the stage.（改为被动语态）
The curtains 　 　 　 across the stage.
【小题5】 Our school has changed greatly in the past several years.（同义句）
There 　 　 great changes in the past several years.

解析：【小题1】本句的含义为那个老人太生气了而不能说一句话，too……to表示太……而不能的含义，angry表示生气的含义，故本题空格处填too angry to。【小题2】本句的含义为自从十年以前我就已经有了自行车，主句不能用短暂动词buy，只能用have的相应形式，故本题空格处填have had since。【小题3】对事情提问的可用疑问词what，后跟一般疑问句，be动词is提前，故本题空格处填What is used。【小题4】被动句的结构为be+过去分词，hang的过去分词为hung，故本题空格处填should be hung。【小题5】本题的含义为在刚过去的几年，我们的学校已经有了巨大改变，there be 的完成结构为there have been，故本题空格处填have been。

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