Change into passive 
1.we will have a celebratinon next year
2.the girls will clean the windowws next monday
3.they will place some tables in the room tomorrow
Make questions for the underlined parts
1. they celebrate the festival (to say thanks to the God)
2. the festival takes place (in our city) every April
3. the Festival is celebrated (every year)
4. people attend the festival (for fun)
5. people celebrate the festival (in a special way)
6. they decorrated the house with ( colourful lights) 
7.we save money ( to go to Lon Don)
8.he went to Ho Chi Minh ( last week) 
9.( many visitors and local people) came to the fesival
10. the sudents ( plants many trees) in the garden
11.they decorrate their room ( with small trees and flowwers)
12.many tourists go to DakLak ( to see elephant racing festival)
13.he learns English ( to find a good jop) ( make a question for the underline part)
14. the Firewwork ffestival is celebrated in Danang ( in May) ( make a question for the underline part)

passive 
1.syudents will use bikes to travel
2. the childen won't finish the exercise in time
3. what will people collect the rubbish to do
4. we will spend a lot of money on buying cars