The correct answer is: E. No error
The sentence is grammatically correct. The word “though” is used to introduce a clause that expresses a contrast or concession. In this case, the clause “though he suffered of fever” expresses a contrast to the main clause “he attended office.” The word “and” is used to join two independent clauses. In this case, the two independent clauses are “he attended office” and “he completed all the pending work by sitting late.” The word “work” is a noun that refers to activities that are done in order to achieve a goal. The word “by” is used to indicate the means by which something is done. In this case, the word “by sitting late” indicates that the work was completed by staying late at the office.
Here is a breakdown of each option:
- Option A: “Though he suffered of fever” is grammatically correct. The word “though” is used to introduce a clause that expresses a contrast or concession. In this case, the clause “though he suffered of fever” expresses a contrast to the main clause “he attended office.”
- Option B: “he attended office” is grammatically correct. The word “he” is a pronoun that refers to the subject of the sentence, which is “though he suffered of fever.” The word “attended” is a verb that means to go to a place regularly, especially to work. The word “office” is a noun that refers to a building or room where people work.
- Option C: “and completed all the pending work by sitting late” is grammatically correct. The word “and” is used to join two independent clauses. In this case, the two independent clauses are “he attended office” and “he completed all the pending work by sitting late.” The word “completed” is a verb that means to finish or achieve something. The word “all” is an adjective that means every one or thing. The word “pending” is an adjective that means not yet decided or settled. The word “work” is a noun that refers to activities that are done in order to achieve a goal. The word “by” is used to indicate the means by which something is done. In this case, the word “by sitting late” indicates that the work was completed by staying late at the office.
- Option D: “work by sitting late” is grammatically correct. The word “work” is a noun that refers to activities that are done in order to achieve a goal. The word “by” is used to indicate the means by which something is done. In this case, the word “by sitting late” indicates that the work was completed by staying late at the office.
Therefore, the correct answer is E. No error.