29．—May I speak to your manager at three o’clock tomorrow afternoon ?—I’m sorry, He to Shanghai by then

I am sorry_____ I have caused so muchtrouble.

I am sitting _______ the bus. A man is standing _______me.

I don’t want to join them on holiday.I can’t ________ to spend money the way they do.[ ]

I know it’s normal for such a thing to happen, but we _____ it if we’d been more careful.