Where was your son?
He was downstairs.
MUST / MUSTN'T
They must be careful.
Was your great-grandmother outside?
No, she wasn't. She was inside
MUST / MUSTN'T
You must help.
MUST / MUSTN'T
They mustn't go outside. / They must stay inside.
MUST / MUSTN'T
She mustn't go upstairs.
MUST / MUSTN'T
He mustn't go inside.
Were your neighbours next to the fence?
Yes, they were.
MUST / MUSTN'T
You mustn't touch the bread.
MUST / MUSTN'T
She mustn't go inside. / The dog mustn't go inside.
Was your great-grandfather on the balcony?
No, he wasn't. He was donwstairs.
Where was your son?
He was outside.
Where were your parents?
They were upstairs.
Where were your grandparents?
They were inside.
Where was your granddaughter? [next to]
She was next to the fence.
MUST / MUSTN'T
He mustn't run.
MUST / MUSTN'T
She must do her homework..
Were your cousins upstairs?
Yes, they were.
Where was your daughter?
She was on the balcony.
MUST / MUSTN'T
She mustn't use her mobile phone.
MUST / MUSTN'T
She must have a ticket.
MUST / MUSTN'T
They mustn't touch the fence.