the girls of ciass four are mopping the fioor in mrs lynn'soffice 怎么提问

你想问什么?
一般：Are the girls of Class Four mopping the floor in Mrs Lynn's office?
特殊：
1.Who are mopping the floor in Mrs Lynn's office?
2.Which girls are mopping the floor in Mrs Lynn's office?
3.What are the girls of Class Four doing in Mrs Lynn's office?
4.What are the girls of Class Four mopping in Mrs Lynn's office?
5.Where are the girls of Class Four mopping the floor?
6.In whose office are the girls of Class Four mopping the floor?
你想怎么问就怎么问.