Living in the western part of the country has its problem,obtaining fresh water is not the leastLiving in the western part of the country has its problem,obtaining fresh water is not the least.A) with whichB) for whichC) of whichD) which 请问为什

Living in the western part of the country has its problem,obtaining fresh water is not the leastLiving in the western part of the country has its problem,obtaining fresh water is not the least.A) with whichB) for whichC) of whichD) which 请问为什
Living in the western part of the country has its problem,obtaining fresh water is not the least
Living in the western part of the country has its problem,obtaining fresh water is not the least.
A) with which
B) for which
C) of which
D) which 请问为什么答案which前面要有of?

Living in the western part of the country has its problem,obtaining fresh water is not the leastLiving in the western part of the country has its problem,obtaining fresh water is not the least.A) with whichB) for whichC) of whichD) which 请问为什
是不是obtaining 前面还有个is