题目内容：

Rewrite the following sentences as required.（按要求改写下列句子，每空格限填一词）1.A drop of water sped down the mountain into the Yangtze river (改为一般疑问句)

_________ a drop of water_________ down the mountain into the Yangtze river?

2.We will graduate from junior school in 10 months. (对划线部分提问)

_________ _________ will you graduate from junior school?

3. He is responsible for the science section of the paper. (保持句子含义不变)

He _________ _________ of the science section of the paper.

4. Could you please tell me how I can operate the machine? (该为简单句)

Could you please tell me __________ __________ operate the machine？

5.ought to, young children, on the escalators, parents, carry (连词成句)