请教 GWD 24-8 用which +从句 或 with+短语 来修饰名词到底有何不同？

终成MBA

24-8 The results of the company’s cost-cutting measures are evident in its profits, which increased five percent during the first three months of this year after it fell over the last two years.

(A) which increased five percent during the first three months of this year after it fell

(B) which had increased five percent during the first three months of this year after it had fallen

(C) which have increased five percent during the first three months of this year after falling

(D) with a five percent increase during the first three months of this year after falling

(E) with a five percent increase during the first three months of this year after having fallen

ANS：C

这题中语态和时态我隐约明白，但是为什么用wich，为什么用with，不太明白！

终成MBA

多谢！多谢！版主的贴图代表什么意思啊？

mirandafu

which +从句做非限定性定语修饰profits, 而with + 短语则修饰主句. 从句子的逻辑意思看, 应用前者.

2.during the first three months of this year 和 over the last two years 都是完成时标志. 在此从句中,前者表示今年开始一直持续到第三个月甚至到说话时为止的动作, 应该用现在完成时. 后者表示过去两年一直持续到去年底为止的动作,是"过去的过去", 如果用句子表达的话, 则用过去完成时; 如果用after, 其后则跟动名词的完成式, 即having fallen. 牛津词典说, after + 动名词 等同于完成式的结构. 即: after falling over the last two years = after having fallen over the last two years.

借花献佛了！不知回答的怎样！