Mary wants to be an actor. （改为一般疑问句）
_______ Mary _______ to be an actor?
These apple trees were planted by the students in Class 1．（改为一般疑问句）
these apple trees by the students in Class 1？
The girls don't know what they can do next．（改为简单句）
The girls don't know what next．
There are three thousand students in the school．（改为同义句）
The of the students in the school three thousand．
My friend asked me，" When will you go to Hainan for your holiday？"（改为间接引语）
My friend asked me I go to Hainan for my holiday．
These flowers are very sweet．（改为感叹句）
flowers they are!