Помогите придумать начало предложений

1) Try this new dish, it won't do you any harm
2) Don't tell him anything, just give him this book - I am sure it'll do him good
3) Let him help you, I am sure he'll do well
4) You know I find she's done very well, don't you? Это предложение какое-то странное, но сюда больше ничего почти грамматически не подходит.