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).
We are trying to locate the historical city for the past two years.
We are trying
to locate the
historical city for
the past two years.
No error
Correct answer is A
We have been trying