The answer that you're looking for is sonnets
Depending on the sentence, a pronoun should be placed before or after the verb. In a statement, it will be before, such as in "I can buy a necklace." In a question, it will be after, such as in "Can I buy a necklace?" (which is after the helping verb but before the acting verb)
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.