Fill in the blank below with the appropriate relative pronoun.Je me demande vous avez vu.

The correct sentence is “Je me demande ce que vous avez vu” (“I wonder what you saw”). Use “ce que” when “what” is the object of the following verb: here, “vous” is the subject and “avez vu” is the verb phrase. “Ce qui” would be used if “what” were the subject, and “que” does not shorten to “qu’” before “vous.”

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