Question

make a meaningful sentence by using the phrase a mammoth task

Answer 1

sentence-

what is the meaning of mammoth task?

Answer 2

"Sorting the students on the basis of their cgpa was a mammoth task".

Here this shows how the phrase "mammoth task" is used to frame sentence.

In real mammoth task is very difficult.they do difficult tasks to survive in the jungle so as per the sentence sorting out the students who are having good cgpa among them is also a hard task compared to the phrase.