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.

1. I am very sorry I should not have bothered you with this trifle.
2. You need not have come so early, now you will have to wait.
3. You should not give/have given the child so much money. It will spoil him. 4. You need not have returned the money so soon. I could have waited.
5. You should not have helped him with this work. He could have managed it himself.