Question

Passive voice:
7. My father didn't buy any food last night.
-> Any food........
8.Vietnamese people decorate their houses at Tet.
-> Vietnamese's houses..............
9. Vietnamese women often wear Ao dai on special occasion.
-> Ao dai........
10. All of the students have finished the test.
-> The test...........
11. People have to use computers to sell things for many years.
-> Computers.......................

Answer 1

Passive voice:
7. My father didn't buy any food last night.
-> Any food.....wasn't bought by my father last night...
8.Vietnamese people decorate their houses at Tet.
-> Vietnamese's houses...are decorated at Tet..
9. Vietnamese women often wear Ao dai on special occasion.
-> Ao dai..are often worn on special occasion by Vietnamese women...
10. All of the students have finished the test.
-> The test.....has been finished by all of the students...
11. People have to use computers to sell things for many years.
-> Computers....have to be used to sell things for many years ....

Answer 2

Passive voice:
7. My father didn't buy any food last night.
-> Any food....wasn't bought last night.....
8.Vietnamese people decorate their houses at Tet.
-> Vietnamese's houses......are decorated at Tet. ........
9. Vietnamese women often wear Ao dai on special occasion.
-> Ao dai..is often worn on special occasion.......
10. All of the students have finished the test.
-> The test...has been finished........
11. People have to use computers to sell things for many years.
-> Computers.........have to be used to sell things for many years. ..............

Answer 3

7. My father didn't buy any food last night.
-> Any food hadn't bought last night
8.Vietnamese people decorate their houses at Tet.
-> Vietnamese's houses decorated their house at Tet
9. Vietnamese women often wear Ao dai on special occasion.
-> Ao dai is often worn by vietnamese women
10. All of the students have finished the test.
-> The test has been finished by all the student
11. People have to use computers to sell things for many years.
-> Computers have to used by people to sold things for many years