Two possible workarounds:
1. You create all languages you need but you use always English except for the question you want to provide in other languages then english.
And you explain why you haven't translated every question.
2. You work with Javascript
you would define an object like that:
var translation_LANGUAGE = {variable1:"translation",variable2:"translation"...}
You create such an object vor every language and then comes the tricky part. Since it depends on the question type how it easy embedded in the DOM you would have to query the whole DOM for the variables and replace them.
Possible tough but you would have to play around a little.
To evoke the translation you would provide a dropdown on every question you want to translate.
So als long you don't have a sound knowledge of JS you should use workaround 1
1. You create all languages you need but you use always English except for the question you want to provide in other languages then english.
And you explain why you haven't translated every question.
2. You work with Javascript
you would define an object like that:
var translation_LANGUAGE = {variable1:"translation",variable2:"translation"...}
You create such an object vor every language and then comes the tricky part. Since it depends on the question type how it easy embedded in the DOM you would have to query the whole DOM for the variables and replace them.
Possible tough but you would have to play around a little.
To evoke the translation you would provide a dropdown on every question you want to translate.
So als long you don't have a sound knowledge of JS you should use workaround 1