Question

how effective these have been is a topic of controversy. no carp has been documented passing through them. but a handful of carp of the lot of their dna have been found upstream of the barriers close to lake michigan. after one dna discovery in 2009, michigan sued the corps and demanded the canal be closed (11) illinois demanding the canal be closed because of the carps threat to great lakes fisheries. such a closure wouldve blocked the small amount of barge traffic that uses the canal to travel in and out of lake michigan and forced chicago to rethink its wastewater disposal. debate raged over what closure would cost. the corps pegged it at 2 billion

1. which choice makes the sentence most grammatically acceptable?

a. no change
b. clearing
c. be clearing up
d. clean up

1. which choice makes the sentence most grammatically acceptable?

a. no change
b. basin. two species have had
c. basin, two species have had
d. basin, but two species have had

1. which choice makes the sentence most grammatically acceptable?

a. no change
b. decades, eating pounds of plankton every day.
c. decades eating pounds of plankton every day.
d. decades. eating pounds of plankton every day.

1. which choice makes the sentence most grammatically acceptable?

a. no change
b. will emit
c. emitted
d. emit

1. which choice makes the sentence most grammatically acceptable?

a. no change
b. illinois, and demanded
c. illinois. demanding
d. illinois, demanding

Explanation:

1. "cleaning up" is a phrasal - verb form that is appropriate in this context for the action being described. "clear cleaning" is incorrect grammar, "clean up" in this form is not the right tense or form here.
2. The original "No Change" is correct as the simple present - perfect "have" is used appropriately to describe an action that started in the past and has a connection to the present. The other options change the tense or add unnecessary words.
3. "decades eating pounds of plankton every day" is the correct way to connect the time period "decades" with the ongoing action of eating. The other options have incorrect punctuation or word - order issues.
4. Without seeing the full sentence, it's hard to be certain, but if it's about verb tense, the correct form depends on the context. However, if it's a simple present - tense statement, "emit" could be correct.
5. "Illinois, demanding" is the correct form as the present - participle "demanding" modifies the previous clause. "and demanded" would require a different sentence structure, and "Demanding" with a period is incorrect punctuation.

Answer:

1. b. cleaning up
2. a. No Change
3. c. decades eating pounds of plankton every day
4. (Need full - sentence context for certainty, but could be d. emit)
5. d. Illinois, demanding