整理 E 「〜わけ」のいろいろな使い方 教科書 p.74
Ways to use 〜わけ
接続：V辞書形・Vない + わけにはいかない
cannot do… because of responsibility or circumstances. It's not that you don't have the ability, but because of responsibility, social position or politeness, you can't do it.
注意 / Note：Check the correct front form, subject and level of politeness; Don't just translate word for word.
比較 / Compare：Compare with structures in the same lesson to choose according to function in the whole sentence. Same 課: 〜わけだ／〜など／〜なんか — these models are often mistaken for each other, read the 接続 line carefully and then decide.
仕事があるので、休むわけにはいきません。
Because I have work, I can't take a break.
約束したから、行かないわけにはいかない。
Because I promised, I couldn't not go.
秘密を話すわけにはいきません。
I cannot reveal the secret.