Составить пять предложений со словом must и mustn't

I must to go to school                         I mustn't cook cake 
I must to do my homewwork              I mustn't play games
I must to go to shop                            I mustn't go to Africa
I must to sleep                                    I mustn't learn so hard
I must to run                                        I mustn't look to him

I must go to schul
I must not work
l mast sing
l mast not swim
l mast slip