8.If they had only had one more child, the fact would have passed unnoticed.
If引导虚拟条件句,表示对过去情况的假设;过去分词unnoticed作主语补足语
unnoticed 形容词作状语
He went away unobserved.
I returned home exhausted.
9.Reporters kept pressing for interviews so lawyers had to be employed to act as spokes-men for the family at press conferences.
press for == demand 形象地表达出不停的催问
The company is pressing me for a decision on their offer.
四六级?还早着哪。如果你有这样的想法,估计最后的结局往往都是考前一周甚至一天开始抓狂。明日复明日,明日何其多。给自己一点压力,成就满意的成绩吧。