“oughtn't to”寫句子，用oughtn't to造句

They oughtn't to let their dog run on the road.

Like it? Well, I don't see why I oughtn't to like it. Does a boy get a chance to whitewash a fence every day?

"Aw, say, son," said Radclif, "you oughtn't to have let her done that!"