Помогите с Английским языком, нужно изменить The workers build houses по временам

The workers built houses.
The workers were building houses.
The workers had built houses.
The workers had been building houses.
The worker builds houses.
The workers are building houses.
The workers have built houses.
The workers have been building houses.
The workers will build houses.
The workers will be building houses.
The workers will have built houses.
The workers will have been building houses.

Did the workers build houses?
Were the workers building houses?
Had the workers built houses?
Had the workers been building houses?
Does the worker build houses?
Are the workers building houses?
Have the workers built houses?
Have the workers been building houses?
Will the workers build houses?
Will the workers be building houses?
Will the workers have built houses?
Will the workers have been building houses?

The workers didn't build houses.
The workers weren't building houses.
The workers hadn't built houses.
The workers hadn't been building houses.
The worker doesn't build houses.
The workers aren't building houses.
The workers haven't built houses.
The workers haven't been building houses.
The workers will not build houses.
The workers will not be building houses.
The workers will not have built houses.
The workers won't have been building houses.

Задание ИДИОТСКОЕ !!!

The workers built houses.
The workers were building houses.
The workers had built houses.
The workers had been building houses.
The worker builds houses.
The workers are building houses.
The workers have built houses.
The workers have been building houses.
The workers will build houses.
The workers will be building houses.
The workers will have built houses.
The workers will have been building houses.