完成下列含有被动语态的句子
They will put off the exhibition until next week.
The exhibition ________________________________ until next week.
They will put another two subways into use in this city.
Another two subways_______________________________ in this city.
We are told that they will build a new middle school in our town next year.
We are told that a new middle school _______________________ in our town next year.
Don't let cows walk on the land; otherwise theywill destroy the plants.
Don't let cows walk on the land; otherwise theplants ______________.
As a general rule an object will become larger when we heat it.
As a general rule, an object will become larger when it _____ ________________.
People will make better use of the Yangtze River when they complete the dam.
When the dam ___________________ better use will __________ ___________the Yangtze River.