Must, mustn't or needn't? 1. come on we hurry. we be late. 2. it's only ten past. we hurry. 3. oh, you go off on your own. it isn't safe. we together in a group. 4. no, you put them in there. it might damage them. in fact, we wash them at all. 5. i forged to type this letter. 6. yes, it go in the post today because it's quite urged. but the report isn't so important. you type the report today.