把下列句子改为被动语态

1 a note is left on the desk by the man.
2 the food in the bowl is always eaten up by the boy.
3 great progress in maths is made by them.

1.The man leaves a notes on the desk.
A note is left on desk by the man.

2.The boy always eats up the food in the bowl
The food in the bowl is always eaten up by the boy.

3.They make great progerss in maths.
Great progress in math is made by them.

1.A note is left on the desk by the man.
A note is left by the man on the desk.
2.The food in the bowl is always eaten up by the boy.
3.Great Progress in maths is made by them.