Find Dhanuskodi and Rameswaram on the map. What language(s) do you think are spoken there? What languages do you think the author, his family, his friends and his teachers spoke with one another?
According to me, Tamil and English are the two languages spoken there. Almost certainly, the author, his family and his friends spoke in Tamil with one another. However, his teachers probably spoke English with the students.
(A model answer has been provided for students' reference. It is strongly recommended that students prepare the answer based on their own understanding.)