IV,
1, Why does he have to wear a hard hat?
2, What did you have yesterday?
3, Why did you stay at home?
4, What is she doing at the moment?
5, Who are they waiting for?
V,
1, You must drink a lot of water every day, so must she.
2, I saw that film last night, he saw it too.
3, My uncle doesn't like durians, my aunt doesn't either.
4, Mary can't hear you, I can neither.
5, Nam doesn't like coffee, Ba does neither.
6, My father drinks beer, my uncle drinks too.
7, She is listening to pop music, so is her sister.
