来自李俊国的问题
Peopleusecotton_______manywaysAtoBwithCinDonFiremenusesalongladdertorescuepeople______tallbuildingsAintoBtoCupDfrom
Peopleusecotton_______manyways
Ato Bwith Cin Don
Firemenusesalongladdertorescuepeople______tallbuildings
A into B to Cup Dfrom

