YOU SAID:

I cannot keep pants on my youngest son.

INTO JAPANESE

私の息子のズボンを守れない。

BACK INTO ENGLISH

I can not keep my son's pants.

INTO JAPANESE

私は私の息子のズボンを保つことができません。

BACK INTO ENGLISH

I cannot keep my son's pants.

INTO JAPANESE

私は私の息子のズボンを保つことができません。

BACK INTO ENGLISH

I cannot keep my son's pants.