Some pars of the sentences have error and some are correct. Find out which part of a sentence has an error and blacken the circle corresponding to the appropriate correct option. If a sentence is free from error, blacken the circle corresponding to ..No error.. option in the Answer Sheet
We have finised our work three hours ago and have been waiting for you since then.

Options

A. three hours ago and have been waiting
B. We have finished our work
C. for you since then
D. No error

Answer

B

Explanation

Here, Past Perfect i.e. We had finished our work is the right usage. The sentence shows past time.