19、A: They don't often hear the twins sing the song in the school.　

B: 　Neither　 of the twins 　is　 often heard 　to　 sing the song in the school.[ZK)]　

18、A: All the American people don't like sandwiches.　

B: 　Not　 　all　 the American people like sandwiches.　 　

17、A: He doesn't like mutton, and she doesn't, either.　

B: 　Neither　 he 　nor　 she likes mutton.

16、A: The children played happily in the zoo yesterday.　

B: The children 　enjoyed　 　themselves　 in the zoo yesterday.　 　

15．Please help yourself to some fish, Lucy.　

14．Nothing is difficult if you put your heart into it.　 　

13．The old man can neither read nor write.　 　

12．She asked us to help each other.

11．Is there anything interesting in the newspaper?　 　

10．Look at 　those　 books. Are they yours?(that)