Ответы и объяснения

1) Who is at the stadium?- The boys are
2) Who was happy? - The parents were
3) Who write exercises? - The pupils write
4) Who are the cheese? - The mice ate
5) Who has got a snake? - Tom and Jack have got

She won't be happy
She wasn't angry
She didn't want
I amn't lazy
I can't give you