Answer:
the all around idea that the story is about
Explanation:
Here, you would need to add the preposition "in."
The sentence should read: My elder sister is really interested in the problems of the environment.
Other prepositions would not make sense and could confuse the reader as to the intended meaning.
Answer:
interviewer
Explanation:
An interviewee is always on the job seeker side of the desk, answering questions, and the interviewer always asks the questions. Interviewee is the simplest term to use for someone who is going to an interview, but it doesn't indicate what stage of the process the person is in.
