Passive Voice

These generators consisted of mirrors that could be moved and could thus concentrate large amount of radiation from the sun on blackened pipes through which water was circulated . in this way the water was turned to steam. Even ice... by a similar method a hundred years ago in Paris.

• Produced

• Was produced

• It produced

• It produced

• Being produced

Some important researches in physics, funded by an international development agency, ... at our university

• Carried out

• Be carried out

• Are carrying out

• Are being carried out

• To carry out

“When will the debate contest take place this years?”

“I’ll let you know later as it...”

• Has not scheduled yet

• Has been scheduled

• Has to schedule

• Has been scheduling

• Has not been scheduled yet

“What is going to happen to the children's who have become orphans due to the tsunami disaster?”

“Don’t worry, they...”

• Will take care of

• Will have been taken care of

• Will have taken care of

• Will be taken care of

• Will be taking care of

It has been estimated that in the

United States $150 billion... each year in direct and indirect costs due to sleep deprivation

• Is lost

• lost

• Losing

• Be losing

• To be lost

When the bus broke down in the middle of the desert, we... that we would have to finishe the journey to our destination on foot.

• Were telling

• Have told

• Were told

• Have been told

• Had told

Astronomers believe that the black hole forms when a massive star runs out of nuclear fuel and... by its own gravitational force.

• Crushes

• Is crushing

• Be crushed

• Is crushed

• Be crushing

“I haven’t got the report on the seminar held last week.”

“I’m sure it ... on your desk yesterday”

• Put

• Being put

• Were putting

• Was put

• Putting

“Last night a thief broke into my brother’s house.”

“Really? What... from the house ?”

• He took

• It was taking

• Was being taken

• Was taking

• Was taken

“Do you know that the math teacher has to attend a meeting at twelve?”

“Wow, so the class...”

• Be dismissed

• Will dismiss

• They will dismissed

• Will be dismissed

• Will be dismissing