Из страдательного в действительный:
1) The painting has been valued by an expert. - An expert has valued the painting.
2) He likes being given presents. - He likes when people give him presents.
3) The bill must be paid immediately. - You must pay the bill immediately.
4) Hot water is provided by the hotel 24 hours a day. - The hotel provides hot water 24 24 hours a day.
Из страдательного в действительный:
1) The painting has been valued by an expert. - An expert has valued the painting.
2) He likes being given presents. - He likes when people give him presents.
3) The bill must be paid immediately. - You must pay the bill immediately.
4) Hot water is provided by the hotel 24 hours a day. - The hotel provides hot water 24 24 hours a day.