There are two doors, one of which _______ to the living room and the other to the kitchen.

There are ______ Russian（s) and ______ American（s) on board.A．one, oneB．one, twoC．two, two

How many examples are there "as evidence of tribalism"？A．Four.B．Two.C．One.D．Three.

In motorships，there are two main circuits, _____.A.one salt water, one fresh waterB.one sa

There are two governments in this country、But neither of them is regarded asthe（)one

There are one or two minor differences, but they are ________ the same text.A substa

Psychologically there are two dangers to be guarded against in old age. One of these is un