Unfortunately there is no way of changing the survey language because when the survey advertisers create the survey to begin with, they write them in the language of the country they advertise them in. They don't expect people outside of that country to perform those surveys so they don't write them in multiple languages. The only thing you can try is using Chrome browser, then download the Google Translate extension and set it to translate to the language you won't. This may not be accurate for some languages like Chinese and Arabic, but you can try.

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