3)
1. it should have been replaced
2. it should have been cleaned
3. it should have been emptied
4. they should have been washed
5. it should have been ment
6. it should have been ordered
3)
1. it should have been replaced
2. it should have been cleaned
3. it should have been emptied
4. they should have been washed
5. it should have been ment
6. it should have been ordered