30 с ! make negative sentences and questions 1. i should have posted that letter yesterday itself,but i forgot. 2. she should have knocked at the door before entering the room. 3. the should have informed his parents that he was unwell. 4. he should have worked harder. 5. he should have obtained the necessary permissions before opening the shop

1. I shouldn’t have posted that letter yesterday itself.
2. She shouldn’t have knocked at the door before entering the room.
3. They shouldn’t have informed his parents that he was unwell.
4. He shouldn’t have worked harder.
5. He shouldn’t have obtained the necessary permissions before opening the shop.

1 Should you have posted that letter yesterday itself?
2. Should she have knocked at the door before entering the room?
3. Should they have informed his parents that he was unwell?
4. Should he have worked harder?
5. Should he have obtained the necessary permissions before opening the shop?