请教两道语法

milkyway

补充材料：42
In assessing the problems faced by rural migrant workers,the questions
of whether they are better off materially than the urban working poor
is irrelevant.
D In an assessment of the problems faced by rural migrant workers,the
questions of whether they are better off materially than the urban
working poor is irrelevant.
答案是：D，那原句为什么不对呢？
补充材料：４7
The lawyer for the defense charged that she suspected the police of
having illegally taped her confidential conversations with her client and
then used the information obtained to find evidence supporting their
muder charges.
D of using the information they had obtained to find evidence that
would support
答案是：D，那原句为什么不对呢？

laoguai

42
A. In assessing... is wrong because 过去分词或现在分词开头的是省略主语，所以必须与逗号后的主语一致

47
注意并列成分：suspect sb. of doing and of doing

milkyway

The lawyer for the defense charged that she suspected the police of
having illegally taped her confidential conversations with her client and
then used the information obtained to find evidence supporting their
muder charges.
D of using the information they had obtained to find evidence that
would support
used 和taped 并列呢？怎么能排除这种可能呢？

lileelee

if interpreted as " she suspected the police of using the information they had obtained...
then the answer can be matched.