题目内容
按要求改写句子
It means not to make any noise.
It means _______ _________ _________.
It takes about two hours to fly from Shanghai to Beijing．(对划线部分进行提问)
________ ________ does it take to fly from Shanghai to Beijing?
It took me two hours to finish my homework. (改为同义句)
I spent two hours ________ ________ ________.
It is impossible that a child can lift such a heavy box. (改为同义句)
It is impossible _______ a child ________ ________ such a heavy box.
It's late. I have to leave. (合并句子)
It is late, so I have to ________ ________.
