摘要： Living in the western part of the country has its problems, obtaining fresh water is not the least. A. with which B. for which C. of which D. which
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. Living in the western part of the country has its problems, ________ obtaining fresh water is not the least.
A) with which B) for which C) of which D) which
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. Living in the western part of the country has its problems, ________ obtaining fresh water is not the least.
| A．with which | B．for which | C．of which | D．which |