что вставить?must/mustn`t?

1)On a ride,you..... stand up.

2)In the concert hall,you ..... turn off your mobile.

3)At the zoo,you.... touch the animals.

4)In the theatre,you....be guiet.

5)In the art galerry,you....photograph the paintings

6)At the fireworKs display,you.... go near the fireworks