help with some more grammar questions?

<p>1) Although several groups strongly opposed the new hiring policies of the city council, other groups (being enthusiastic in their support of) the new rules.
a) being enthusiastic in their support of
b) were enthusiastic and supportive of
c) enthusiastically supported
d) enthusiastically supporting
e) are enthusiastically supportive of
2)(introducing) new ideas and replacing (old ones) (is) always a highly controversial matter, (especially when) there is already tension between an older and a younger generation.
Thanks!</p>

<h1>1: c; parallelism - “strongly opposed” & “enthusiastically supported”</h1>

<h1>2: no error; It helps me to think of the subject as the introduction and replacement of ideas. Grammatically, they are gerunds that count as singular nouns; therefore, “is” is correct.</h1>

<p>So gerunds are considered singular even if multiple are joined together with an and?</p>

<p>I’m not sure about the actual grammar rules, but it sounds awkward to say “are” instead of “is” in the original sentence.</p>

<p>On the other hand, “are” doesn’t sound so awkward in the following sentence:</p>

<p>“Introducing new ideas and replacing old ones (are) always highly controversial matters…”
(the “a” was deleted before “highly”, and “matter” was changed to “matters”)</p>

<p>makes sense! Thanks man!</p>

<p>here is another one, if u can help with it. I am pretty sure I got this one correct, but it says that I got it wrong… anyways here it is:

  1. the problem of water (pollution, frequently compounded in certain areas because) the treatment and release of industrial waste are not adequately regulated.
    a) pollutions, frequently compounded in certain areas because
    b) pollution, frequently compounded in certain areas and
    c) pollution, frequently compounded in certain areas where
    d) pollution is frequently compounded in certain areas where
    e) pollution is frequently compounded in certain areas and
    I got D but the back of the book says E…</p>

<p>It’s D, not E.</p>

<p>ok, that is really weird. Typo in the official BB… found a couple other ones…Anyways, thanks for verifying.</p>