Read each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer. If there is no error, the answer is 'E'. (Ignore the errors of punctuation, if any).
When the national anthem was being sung, everyone were standing in silence.
When the national
anthem was being
sung, everyone were
standing in silence.
No error
Correct answer is C
Sung, everyone was