Exercise 27 - Active and Passive Voice: Perfect Tense and Modals

ANSWERS

Practice A

2, 3, 5, 7, 8

Practice B

1.         have already been sewn
2.         must obey
3.         had been nursed
4.         may be cancelled
5.         has just been brushed
6.         will have been operated on
7.         had already demolished
8.         must be repaired
9.         may choose
10.         will have been submitted