1.They did not let the students take books out of the reading-room(同义句） They do not know what t
1.They did not let the students take books out of the reading-room(改为同义句）
2.They do not know what they will do（同义句）
They do not know what(添两个单词）
3.The English homework must be handed in this afternoon(改为主动句）
We 添三个单词 the E nglish homework this afternoon