How does the author's tone change in paragraphs 27 and 28

Explanation: It was a week later, the day of Premila’s fi rst test, that our lives changed rather

abruptly. I was sitting at the back of my class, in my usual inattentive way, only half

listening to the teacher. I had started a rather guarded friendship with the girl with the

braids, whose name turned out to be Nalini (Nancy, in school). Th e three other children

were already fast friends. Even at that age it was apparent to all of us that friendship

with the English or Anglo-Indian children was out of the question. Occasionally,

during the class, my new friend and I would draw pictures and show them to each

other secretly.

27 Th e door opened sharply and Premila marched in. At fi rst, the teacher smiled at

her in a kindly and encouraging way and said, “Now, you’re little Cynthia’s sister?”

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