Egyptians built the Pyramids without the help of machinery.
The Pyramids were built (by Egyptians) without the help of machinery.
Have they bought ice-cream for dessert?
Has ice-cream been bought for dessert?
Indians did not invent paper.
Paper wasn't invented by Indians.
We haven't washed the dishes yet.
The dishes haven't been washed yet.
People have used dogs to guard farms for centuries.
Dogs have been used to guard farms for centuries.
They don't make LEGO out of wood.
LEGO isn't made out of wood.
They water the flowers every day.
Flowers are watered every day.
They created the most beautiful music in the 17th century.
The most beautiful music was created in the 17th century.
Greece exports olive oil.
Olive oil is exported by Greece.
They will built a new eco-friendly city near Dubai.
A new eco-friendly city will be built near Dubai.
We won't finish this work on time.
This work won't be finished on time.
You can't use this computer to go online.
This computer can't be used to go online.
They are painting the kitchen now.
The kitchen is being painted now.