Li Hua's mother took part in Hubei medical aids in February． （对划线部分提问）
took part in Hubei medical aids in February？
Whose schoolbag is on the desk？Father asked．（合并为含有宾语从句的复合句）
Father asked schoolbag on the desk．
Mr．Black decided to send his son to China．（改为同义句）
Mr．Black the to send his son to China．
The waiter took away the plates after we finished eating． （改为被动语态）
The plates away by the waiter after we finished eating．
This warning sign tells us not to pick flowers．（保持句意基本不变）
This warning sign says，" flowers!"
The little girl put her things on the floor．（改为一般疑问句）
the little girl her things on the floor？