The _________ is a major river of North America.A．SeineB．ThamesC．MississippiD．Danube

The longest river in Britain is _____________.A.River SevernB.River ThamesC.River Missis

There is a river in the valley，fresh flowers _________________.A、is on the banksB、were

______ is the longest river in the United States.A．The Waikato RiverB．The Mackenzie RiverC

The longest river in Australia is ______A．Waikato River.B．Severn River.C．Mackenzie River.D

The longest river in Ireland is______River.A．MississippiB．SevernC．NileD．Shannon

The mother river in Canada is______.A．St. LawrenceB．River ColumbiaC．River ShannonD．the Mur