Sentence Correction

hi,

please explain the following questions, please try to explain wrong ones too:

1.Bill Walton continued on playing, even though he had injuries that recurred over and over again, always hoping to return back to his position as a regular starter in the game he loved.
(A) on playing, even though he had injuries that recurred over and over again, always hoping to return back
(B) playing, in spite of recurrent injuries, always hoping to return
(C) playing, though injured over and over, and he was always hoping to return back
(D) on playing, even with injuries that recurred, and always hoped to return
(E) to play, despite recurring injuries, hoping that the return


2.Because natural gas is composed mostly of methane, a simple hydrocarbon, vehicles powered by natural gas emit less of certain pollutants than the burning of gasoline or diesel fuel.
(A) less of certain pollutants than the burning of gasoline or diesel fuel
(B) fewer of certain pollutants than burning gasoline or diesel fuel do
(C) less of certain pollutants than gasoline or diesel fuel
(D) fewer of certain pollutants than does burning gasoline or diesel fuel
(E) less of certain pollutants than those burning gasoline or diesel fuel

//isn't pollutants countable?

Thanks,
Sandeep Nagar

B is correct here for first question

nagar.sandeep wrote:hi,

please explain the following questions, please try to explain wrong ones too:

1.Bill Walton continued on playing, even though he had injuries that recurred over and over again, always hoping to return back to his position as a regular starter in the game he loved.
(A) on playing, even though he had injuries that recurred over and over again, always hoping to return back
(B) playing, in spite of recurrent injuries, always hoping to return
(C) playing, though injured over and over, and he was always hoping to return back
(D) on playing, even with injuries that recurred, and always hoped to return
(E) to play, despite recurring injuries, hoping that the return


2.Because natural gas is composed mostly of methane, a simple hydrocarbon, vehicles powered by natural gas emit less of certain pollutants than the burning of gasoline or diesel fuel.
(A) less of certain pollutants than the burning of gasoline or diesel fuel
(B) fewer of certain pollutants than burning gasoline or diesel fuel do
(C) less of certain pollutants than gasoline or diesel fuel
(D) fewer of certain pollutants than does burning gasoline or diesel fuel
(E) less of certain pollutants than those burning gasoline or diesel fuel

//isn't pollutants countable?

Thanks,
Sandeep Nagar

imo
[spoiler]
1) B

2) E[/spoiler]

1) "continued on playing" is unidiomatic, A and D are out.
"Hoping that the return" would expect a outcome of the hope, so E is out.
"recurrent injuries" is more concise than "injured over and over" so C is out, B it is.

2) fewer pollutants is right, since pollutants is countable. But "certain pollutants" means the list of pollutants and therefore number of them is decided, so it should be less/more etc. So B and D are out.
We are comparing vehicles that use natural gas with other vehicles that burn gasoline, so "than those burning" is important, so E is right.

It is B and E respectively