"Why do you put that back on the bag after opening it instead of throwing it away?"
"How come you don't throw that away and keep it on the bag after opening it?"
"Why do you put that back on the bag after opening it instead of throwing it away?"
"why do you ~" 「なんで〜」
"put that back on the bag" 「それをパンの袋につける」
"after opening it" 「開けて後」
"instead of throwing it away" 「捨てる代わりに」・「捨てずに」
"How come you don't throw that away and keep it on the bag after opening it?"
"how come you ~" 「なんで〜」
"don't throw that away" 「それを捨てずに」
"keep it on the bag" 「パンの袋に残る」
[なんで](https://eikaiwa.dmm.com/uknow/questions/4163/)についてもっと詳しく知りたい方はクリックしてください。
オーストラリア 
