请根据要求改写下列句子，每空一词。

小题1:The doctor asked the old man to stop smoking. (改为一般疑问句)

________ the doctor ________ the old man to stop smoking?

小题2:The girl is clever. She can work out difficult problems. (合并为一句)

It is clever _________ the girl _________work out difficult problems.

小题3: I prefer doing everything for myself to asking my mother for help. (保持句义基本不变)

I would _________ do everything for myself _________ ask my mother for help.

小题4:Those local businesses supported the charity show. (改为被动语态)

The charity show __________   _________ by those local businesses.

小题5:Martin was so excited at the news that he couldn’t fall asleep. (改为简单句)

Martin was _________ excited at the news _________fall asleep.

分馏法是利用成分沸点的不同，气化先后次序不同进行分离的，下列官能团中，沸点最低的是

A．酸

B．醇

C．酮

D．醛

E．醚