1,They want to discuss the math problem.2,I won’t leave until my mother comes back.同义句转换!

1. They would like to talk over the math problem.
2. I will leave once my mother comes back.

They want to have a discussion regarding the maths problem.
Before my mother comes back, i am not leaving.
简单！

They would like to have a talk about the math problem.
I will stay here till my mother comes back.

1 They want to talk about the maths problem.
2 I will leave when my mother comes back.

1.They want to talk about the math problem.
2.I will leave as soon as my mother comes back.