Direction: In the following questions, some parts of the sentences have errors and some are correct. Find out which part of a sentence has an error. The answer of that part is the answer. If a sentence is free from error, your answer is (4), i.e. No error.
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Solve the question according to given instruction
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- He studied
- so hardly
- he was sure of passing.
- No error
Correct Option: B
so hard that will replace so hardly because –
so hard that : in such a way that. It is also used for mentioning a result.
The format will be as follows : 
