Choose the correct word. 1 I go outside, please? A Can B Need C Must 2 You drive on campus: It's forbidden. A needn't B mustn't C have to 3 The rules say we keep our rooms tidy. A must B can C can't 4 I'm afraid you go out now. It's too late. A can B can't C needn't 5 You put posters on the wall. It's forbidden. A needn't B mustn't C have to