Choose the part of the sentence which has an error.
The two watchmen of our society / who guards the main gate at night / have asked the secretary / for a small heater this winter.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → who guards the main gate at night
Here “who” stands for “the two watchmen”. The verb after “who” agrees with the noun that “who” stands for. “Watchmen” is plural, so the verb must be plural too: who guard.
Option 1: The two watchmen of our society — No error.
Option 2: who guards the main gate at night — Error. “who guards” should be “who guard”.
Option 3: have asked the secretary — No error. The subject “The two watchmen” is plural, so “have” is right.
Option 4: for a small heater this winter — No error.
Corrected: The two watchmen of our society who guard the main gate at night have asked the secretary for a small heater this winter.