1 has his son been serving in the army since last year?
his son hasn't been serving in the army since last year
2 has it been snowing hard since morning?
it hasn't been snowing hard since morning
3 have they been arguing for 2 hours?
they haven't been arguing for 2 hours
4 has Sam been sleeping for 2 hours?has he been cleaning the flat all day today?
Sam hasn't been sleeping for 2 hours.He hasn't been cleaning the flat all day today
5 have the scientists been working on this problem since the beginning of time?The scientists haven't been working on this problem since the beginning of time
6 has Mr White been translating this book for two months?
Mr White hasn't been translating this book for two months
my mum has got a beautiful dress
i have got a dog
i have breakfast