man can't live without air or water(保持句意不变) Man can't live ____there is ____air or water
还有
He went on writingeven while he was ill(保持句意不变)
He didn't ____ ____writing even while he was ill
Mary didn't pass the chemistry test(保持句意不变)
Mary ____ _____pass the chemistry test
The sheep belongs to (The old man)划线部分提问
____ _____the sheep belong to?