We current support about 80 languages -- so most likely, we support the language that your interested in -- this includes both right-to-left and left-to-right languages.
We support English, French, Spanish, Chinese, German, to name a few languages.
Plus, you can purchase a Google Translation ID to help with translating your survey questions and answers.
A single survey can be presented to respondents in more than one language -- you can give people the option of choosing their language when they start the survey (they can even switch during the survey). Data collected will be associated with your single survey, and your statistics and reports will include both languages for quantitative analysis.