You (must do/ must doing) your homeowork.
must do
(How many/ How much)....students are there in your class?
How many
I have......(some/ any/ a/ much) new English books.
some
You................wash your hands.
must
You.............use your mobile phone in class.
mustn't
This lake has ......(a few/ many/ much/ any) water.
much
You ...............sleep in class.
mustn't
You.............take photos.
mustn't
You ..............listen to the teacher.
must
You/ must/ talk/ loudly/ the library
You mustn't talk loudly in the library
You...............wear a mask.
must
There is........(many/ a little/ a few/ any) milk in the bottle.
a little
You..............raise hand to speak.
must
You.................be late for school.
mustn't