In the following question, some parts of the sentence have an error and some are correct. Find out which part of a sentence has an error. If a sentence is free from error, your answer is (d).
His son (a)/ is working (b)/ very hardly (c)/ No error (d)
His son
is working
very hardly
No error
C.
very hardly
Use 'hard' in place of 'hardly' in a third part of the sentence.