For the following questions answer them individually
Select the most appropriate one-word substitution for the given group of words.
A person who remains unmoved and unaffected by other people's opinions, suggestions
Identify the segment in the sentence which contains a grammatical error.
Vijaya saw the play in a auditorium near her house.
Select the most appropriate one-word substitution for the given group of words.
A boat or ship for conveying passengers and goods, especially over a relatively short distance and as a regular service
Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’.
I'm certain go to start studying from today.