Choose the correct word, A, B, or C, to complete the sentences?

Choose the correct word, A, B, or C, to complete the sentences. 1 You do your best and get a good grade on your project. A should B shouldn’t C mustn’t 2 Sarah doesn’t like hospitals. She be a doctor. A should B mustn’t C shouldn’t 3 My parents do homework any more. They don't go to school! A shouldn’t B mustn’t C don’t have to 4 You get up early if you don’t want to be late for school. A shouldn’t B must C don’t have to porfa me ayudan lo necesito urgente : (.