そうするしかない

N4 そう sou so, like that, really N5 する suru do, perform, try N5 ない nai there isn't, doesn't have

N5 〜しか〜ない shika nai Indicates negative exclusivity, equivalent to only and nothing else, always used with negative form N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜か ka Marks a question, alternative, or uncertainty, appears at the sentence end or between options