Вставить must/mustn't. Даю 50 балов!!! Помогите!!!!!!!

You......throw rubbish in the bin.
You......leave by 6 o'clock or you'll be late.
They......eat inside the gallery!
We.......take photos. It's bad for the paintings.
You......be quiet in this library.
You......feed the animals at the zoo. It's dangerous.

1. Must2. Must3. Mustn't 4. Mustn't 5. Must6. Mustn't

You must throw rubbish in the bin. You must leave by 6 o'clock or you'll be late. They mustn't eat inside the gallery! We mustn't take photos. It's bad for the paintings. You must be quiet in this library. You mustn't feed the animals at the zoo. It's dangerous.