Вопрос по английскому языку:

Заполните предложения с не должны , не может, или не нужно. 1- I....... rewrite my English test. I've got an excellent mark for it. 2- Students........ use mobile phones in the lesson. 3- You....... learn this poem by heart. You can just read it aloud. 4- Why........ I play computer games now? I have already finished my essay. 5- My brother ....... go to school today . He's got the flu. 6 - You ....... join the Dance Club if you want to take part in this contest.-------- (Помогите пожалуйста )