Unit 9 Science, 9D Grammar, The passive (present perfect and future), page 99
1 has been stolen
2 have been developed
3 has been damaged
4 hasn’t been seen
5 has been spent
6 hasn’t been sold
1 The factory has been sold.
2 The glass in the windows has been replaced.
3 The big front door has been painted.
4 The metal sign hasn’t been changed.
5 A new road has been built.
6 The new roof hasn’t been finished.
2 Has your home ever been burgled?
3 Have you ever been chased by a dog?
4 Has your phone ever been stolen?
5 Have you ever been invited to a wedding?
2 most of your electricity will be provided by the sun.
3 all the rooms will be cleaned by robots.
4 the lights will be operated by your smartphone.
5 all of your food will be prepared by machines.
6 the temperature in every room will be controlled by a computer.
1 have been completed
2 has been chosen
3 will it be built
4 will not be decided
5 will be approved
6 will be sent