.8. Mr. Brown has not only read a novel by Charles Dickens but also seen the film made from it.
=> Not only has Mr. Brown read a novel by Charles Dickens but he has also seen the film made from it.
9. They like not only field events but also team games.
=> Not only do they like field events but also team games.
10. Mary has not only toothache but also headache.
=> Not only does Mary have toothache but also headache.
11. The pavements are not only narrow but also crowded.
=> Not only are the pavements narrow but also crowded.
12. That boy was not only dirty but also lazy.
=> Not only was that boy dirty but also lazy.