YOU SAID:

My dog ate my brother's sock while he was outside playing football.

INTO JAPANESE

私の犬は、外でサッカーをしているときに兄の靴下を食べました。

BACK INTO ENGLISH

My dog ate his brother's socks while playing soccer outside.

INTO JAPANESE

私の犬は外でサッカーをしているときに兄の靴下を食べました。

BACK INTO ENGLISH

My dog ate his brother's socks while playing soccer outside.