A part of the following sentence is underlined. Choose the option that can replace the underlined part to improve the sentence. If you feel Options A, B, or C do not improve the sentence, then choose Option D: "No improvement required."
The students worked hard and were thus able to complete the assignment on time.
Show answer & explanation
Correct answer: D
Explanation
In the given sentence, "hard" is an adverb describing how the students worked.
The original phrase "worked hard" is grammatically correct and perfectly conveys that the students put in significant effort. He put significant effort to complete the assignment on time.
The given sentence is correct and hence requires no improvement.