7. which part of speech can an adjective modify?
o adverbs
ntial)
overbs
o pronouns
o adjectives

It can modify pronouns:)

The sentence needs a descriptor of exactly "what" will happen at gurley and marina. in this case, it is the light at the intersection turning green. in this case, the sentence could be rewritten as "the light at the intersection of gurley and montezuma will turn green exactly three seconds after the light at the intersection of gurley and marina."