Resposta:
como as frases estão positivas,e estão no passado vc irá usar "did".
Explicação passo-a-passo:
i combed my hair.
i didn't comb my hair.
did you comb your hair ?
they played guitar yesterday
they didn't play guitar yesterday.
did they play guitar yesterday ?
she brushed her teeth last night.
she didn't brush her teeth last night.
did she brush her teeth last night ?
(não sei se está certo,mas acho q é assim,se estiver certo espero ter ajudado.)
