Yes/no questions are formed with standard word order and a *verb not verb* phrase.
Isan khu isan dasiu napysh?
Eat not eat mouse(past) cheese(dir-obj)?
Did the mouse eat the cheese?
Gunti khu gunti uyryg ndakhu?
Build not build pig(fut) house(dir-obj)?
Is the pig going to build a house?
Meli khu meli nyn myn?
Love not love you me(dir-obj)?
Do you love me?
You can answer these questions with a simple mu (yes) or khu (no), or by repeating the verb, with or without the negating khu
Q: Isan khu isan dasiu napysh? - A: Isan / Khu isan
Q: Eat not eat mouse(past) cheese(dir-obj)? - A: Eat / Not eat
Q: Did the mouse eat the cheese? - A: It ate it / It didn't eat it