Поставьте вопросы всех типов к следующим предложениям

Rust may slow the maturity rate of the grain plants;
Does Rust may slow the maturity rate of the grain plants?
What does Rust may do?
Does Rust may slow the maturity rate of the grain or podded plants?
Rust may slow the maturity rate of the grain plants, doesn`t he?
Harvesting has undergone a revolution during recent years;
Has harvesting undergone a revolution during recent years?
What has harvesting undergone during recent years?
Harvesting has undergone a revolution during recent years, hasn`t it?
Has harvesting undergone a revolution during recent years or during last 3 years?
The number of acres of grain per man is much greater today than was a few years ago;
Is the number of acres of grain per man much greater today than was a few years ago?
When was the number of acres of grain per man much greater than today?
The number of acres of grain per man is much greater today than was a few years ago, isn`t it?
Was the number of acres of grain per man much greater today or few years ago?
Grain must be dried before threshing.
Must be dried grain before threshing?
When must be dried grain?
Grain must be dried before or after threshing?
Grain must be dried before threshing, mustn't it?

May rust slow the maturity rate of the grain plants?
What may rust slow?
May rust or dust slow the maturity rate of the grain plants?
Rust may slow the maturity rate of the grain plants? mustn't in?
What may slow the maturity rate of the grain plants?