求助：错误 '800a0401' 语句未结束 看错误出在哪里

运行时提示如下错误：
Microsoft VBScript 编译器错误 错误 '800a0401'

语句未结束

/QuestionPreview.asp，行 109

strType="<input name =" " type =" checkbox " value =" ">"
------------------------^

我程序的出错代码如下：
<% for cycle1="1" to rscount
           QuestionType=rs("Type")
           strAnswer=rs("Answer")
          select case QuestionType
            case "1"
            strType="dfhgf"
            case "2"
            [bo]strType="<input name =" " type =" checkbox " value =" ">"[/bo]      '109行
            case "3"
            strType=" <input name="" type="radio" value=""> "
            case "4"
            strType=" <input name="" type="checkbox" value=""> "
            case "5"
            strType=" <textarea name="textarea"></textarea> "
            end select
            
    
           %>
        
求高手指点，问题出在什么地方。急。。。多谢