Direction: In the following questions, some of the sentences have errors and some have none. Find out which part of a sentence has an error. The number of that part is your answer. If there is No error, your answer is (4), i.e. No error.
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					 Solve the question according to given instruction
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                        - The sea looks
- as if it has been
- agitated by a storm
- No error.
 
Correct Option: B
had been will replace has been because – 
to show that a comparison is unreal, we use Past Tense with a present meaning after as if/as though. 
Look at the examples given below : 
She looks as if she were rich. 
She talks as if she were mad. 
Hence, as if it had been is the right usage. 
 
	