Those who are concerned about the environment question if the timber industry, interested in cost-efficiency, might not be initiating a program that increased productivity but polluted nearby rivers and streams.
a.
b.question if the timber industry, interested in cost-efficiency, had not initiated
c.question whether the timber industry, interested in cost-efficiency, might not initiate
d.wonder as to whether the timber industry, interested in cost-efficiency, were to initiate
e.wonder whether the timber industry, with its interest in cost efficieny, initiated
很容易的把选项集中到 C E上，由于时间的紧迫感，加上老师说的“情态动词不能添加删除和改变” 于是就选了C。 但答案是E