We must _____________ in the library.
keep quiet
We must _____________ at the tuck shop.
line up
We mustn't _____________ on the floor.
spit
We must _____________ in class.
pay attention
We mustn't ________ the bookshelf.
climb
We must ______ for our turn.
wait
We mustn't __________________ in the garden.
pick the flowers
We must ____________________ the grass.
keep off
We must ______ in the lessons.
sit still
