Direction: In the following questions, some of the sentences have errors and some are correct. Find out which part of a sentence has an error. If there is No error, the answer is (4). (Ignore errors of punctuation, if any).
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					 Solve the question according to given instruction
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                        - It was in 2006
- that we first flew
- to the United States.
- No error.
 
Correct Option: B
when will replace that because – 
when is used in time clauses to say that something happened, happens, or will happen at a particular time. 
Look at the examples given below : 
He left school when he was sixteen. 
The last time when I went to Scotland, the weather was beautiful. 
Hence, when we first flew is the right usage 
 
	