MARY HAS JUST SOLD A BIG PIG IN THE CAGE.A. A BIG PIG HAS JUST SOL...

14. - BAI ON KIEM TRA HOC KY 1 KHOI 10
BAI ON KIEM TRA HOC KY 1 KHOI 10
14. Mary has just sold a big pig in the cage.a. A big pig has just sold in the cage by Mary. b. A big pig has just been sold in the cage by Mary.c. A big pig has just sold by Mary in the cage. d. A big pig have just been sold in the cage by Mary.