It was wrong of you to allow a four-year-old child to walk home alone.-> You should………………………………

1- It was wrong of you to allow a four-year-old child to walk home alone.
You should…………………………………………………………………
2- Although Richard is competent in his work, he does not know how to deal with this client.
Competent…………………………………………………………………………     
3- I could hold a big party thanks to my Mom’s help.
Had it not …………………………………………………