B: The emergency <em>lights</em> atop the fire trucks <em>were</em> flashing. Lights is your noun and were acts like your verb.
for A it should be: The exhibits on the lower level are not currently open to the public.
for C it should be: That man, wearing sunglasses, seems to be an undercover police officer.
for D it should be: Perry, like his younger sister Pauline, writes very neatly.
Hopefully this helped and good luck.
The answer for this one is true
A jaundiced judge might not be able to make a final decision.
Since a judge's sense of justice has to be as impartial and unbiased as possible, such conflicting emotions of resentment and bitterness might cloud his judgment and give a wrong verdict
Does it take you by interest and are you willing to put a little more information for that topic.