Nous ______________ les cheveux.
We brushed our hair.
HINT: Conjugate "se brosser" (to brush) using Le Passé Composé.
avons brossé / se sommes brossés / nous avons brossés / nous sommes brossé
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It is stated the correct answer is "nous sommes brossé". However, it is a mistake.
The verb must agree with the subject when it is conjugated with 'être'. In this case, there are a reflexive verb, which has to be conjugated with 'être', and subject 'nous'. Hence, the correct answer is "nous sommes brossés".
I would appreciate your comments on this.