EX3:
1, The job was given to Mary and Bob.
2,This is the first time i have been in England.
3,The bill have to be paid before the first of the month.
4,By whom has written this book?
5, Their children don't be made to work hard.
EX2:
1,B 2,C 3,B 4,C 5,D
EX1:
1,A 2,D 3,A 4,B 5,C 6,A 7,B 8,D