如何控制 alterqcm 中的换行符

Question

这是一个最小的工作示例，可以阐明我的问题。

\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{alterqcm}

\begin{document}
\begin{alterqcm}[symb = \dingsquare,lq=6cm,language=english] 
\AQquestion{This is a long question, which can be written over serveral lines with line breaks.}{% 
{One short proposition 1},
{A longer proposition 2, still fits},
{A really long proposition 3, which does not fit in one line and has this really wide spacing between lines},
{Just another short proposition 4}}  
\end{alterqcm}

\end{document} 

因此，当我的答案需要多行时，就会出现这种奇怪的大间距。当我\smash提出命题时，每个答案都会写在一行中，忽略右边距。我如何强制alterqcm将垂直间距减少到最后一行？

Answer 1

如果可以接受手动换行，那么就可以得到\Longunderstack答案。

\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{alterqcm,stackengine}
\setstackEOL{\\}
\begin{document}
\begin{alterqcm}[symb = \dingsquare,lq=6cm,language=english] 
\AQquestion{This is a long question, which can be written over serveral lines with line breaks.}{% 
{One short proposition 1},
{A longer proposition 2, still fits},
{\Longunderstack[l]{A really long proposition 3, which\\ 
  does not fit in one line and has this\\ 
  really wide spacing between lines}},
{Just another short proposition 4}}  
\end{alterqcm}
\end{document}

正如 maryjn 在评论中指出的那样，\parbox可以使用 a。如果使用该[t]选项，则对齐也可以。

\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{alterqcm,stackengine}
\setstackEOL{\\}
\begin{document}
\begin{alterqcm}[symb = \dingsquare,lq=6cm,language=english] 
\AQquestion{This is a long question, which can be written over serveral lines with line breaks.}{% 
{One short proposition 1},
{A longer proposition 2, still fits},
{\parbox[t]{6cm}{A really long proposition 3, which
  does not fit in one line and has this
  really wide spacing between lines}},
{Just another short proposition 4}}  
\end{alterqcm}
\end{document}