Use should or need with the correct form of the infinitive in brackets.
1. I am very sorry I … not (to bother) you with this trifle. 2. You ... not (to come) so early, now you will have to wait. 3. You ... not (to give) the child so much money. It will spoil him. 4. You ... not (to return) the money so soon. I could have waited. 5. You ... not (to help) him with this work. He could have managed it himself.