The River______is the longest river in Britain.A．ThamesB．SevernC．MerseyD．Humber

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

The Changjiang River is one of ______ in the world.A、the longest riverB、longest riversC

______ is the longest river in AustraliaA．The Mississippi RiverB．The Murray RiverC．The Mac

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

______ is the longest river in Britain.A．The Mississippi RiverB．The Murray RiverC．The Mack

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