We can't refuse their invitation. It would look rude.-> It would look......
It would look rude not to refuse their invitation.
She worked overtime. Wasn't it good of her? -> Wasn't it...............?
Wasn't it good of her to work overtime?
Ring me later. Would you be so good? -> Would you........
Would you be so good to ring me later?
Open the window. Would you be good enough? -> Would you.........
Would you be good enough to open the window?
He was foolish. He left the firm -> He was foolish to.......
He was foolish to leave the firm.
He's eager. He wants to help us in any way he can. -> He's..................
He's eager to help us in any way he can.
He worked out the answer. It was clever of him. -> It was.........
It was clever of him to work out the answer.
i was careful. I didn't offend them. -> I was..............
I was careful not to offend them.
They don't take any part in local life. It's silly of them. -> It's ..........
It's silly of them not to take any part in local life.