Answer:
but last year I work hard enough for English that's why my marks be really that good then
The benefit of group work that is demonstrated in this example is enabling a complex task be broken down to simpler and fewer works. Since each individual had been given fewer task, it leads to increase of productivity while saving the time consumed in finishing the project.
It is a fragment because it doesn't make sense on its en. Its a subordinate clause.
It’s comparing the difference in water and the water life in the gulf of Mexico and the Mississippi flood waters
1) c. and d. because they both describe when and to what extent.
2) a. and d. because these describe to what extent and how.
3) b. because it describes to what extent
4) d. because it describes when.
5)
