WhoFoundUSA
W=WeiBin
T=teacher
S=students
T:Thisisamapofthewholeworld.WhocantellmewhereisTheUnitedStates?
W:Iknow.(HepointattheUnitedStates.)
T:WhofoundTheUnitedStates?
S:WeiBin.
WhoFoundUSA
W=WeiBin
T=teacher
S=students
T:Thisisamapofthewholeworld.WhocantellmewhereisTheUnitedStates?
W:Iknow.(HepointattheUnitedStates.)
T:WhofoundTheUnitedStates?
S:WeiBin.