You must not shout
you must not eat
you must not to break the discipline
18) largers
19) served
20) fallen
21) are formed
22) discovered
23) meant
24) first
25) monthes
26) less
You mustn't
run. You mustn't
shout. You mustn't
fight. You must do what the teacher says. You must sit still.
You must behave well.
You must listen attentively to the teacher. <span />