Correct: 'She knows the answer to this question.' 'Know' is a stative verb and is not used in continuous (-ing) tense.

Correct: 'Each of the students has submitted their assignment.' 'Each' is singular and takes a singular verb 'has', not 'have'.

Correct: 'Neither of the two options is correct.' 'Neither' is singular and requires a singular verb 'is'.

Correct: 'He is one of the best players in the team.' 'One of the' is followed by a plural noun, so 'player' should be 'players'.

Correct: 'I have been working here for three years.' Use 'for' with a duration of time and 'since' with a specific point in time.

Correct: 'She is smarter than her brother.' Do not use 'more' with a comparative adjective that already ends in '-er'.

Correct: 'The news is very shocking today.' 'News' is treated as a singular noun and takes a singular verb 'is'.

Correct: 'Neither the manager nor the employees were informed.' With 'neither...nor', the verb agrees with the subject closest to it; 'employees' is plural, so use 'were'.

Correct: 'He asked me where I was going.' Do not use 'that' before an indirect wh-question.

Correct: 'I have been living in this city since 2015.' Use present perfect continuous tense with 'since' for actions continuing from the past to the present.

Correct: 'Everyone of the candidates was present for the interview.' 'Everyone' is singular and requires a singular verb 'was'.

Correct: 'This is the most unusual idea I have ever heard.' (or 'This is a unique idea') 'Unique' is an absolute adjective and cannot be modified by 'most'.

Correct: 'She along with her friends is going to the market.' Phrases like 'along with', 'as well as', and 'together with' do not change the number of the subject; the verb agrees with 'She', so use 'is'.

Correct: 'I would suggest you consult a doctor.' 'Suggest' is not followed by 'to + verb'; use 'suggest + subject + base verb' or 'suggest + gerund'.

Correct: 'He is senior to me in the company.' Use 'senior to', not 'senior than', since 'senior' is a Latin comparative that takes 'to'.

Correct: 'The number of students is increasing every year.' 'The number of' takes a singular verb, while 'A number of' takes a plural verb.

Correct: 'She has fewer friends than her sister.' Use 'fewer' for countable nouns (friends) and 'less' for uncountable nouns.

Correct: 'He is intelligent enough to solve this problem.' 'Enough' should come after the adjective it modifies, not before.

Correct: 'Scarcely had he reached the station when the train left.' 'Scarcely' is paired with 'when', not 'than'.