Look at paragraphs 1 and 2 Paul's email​

8. When ( looked) out of the window, I( saw) that it (was snowing) and everything (was covered with snow.
9. Is somebody ( talking) in the next room? - No, nobody (is talking). My son (is watching) television now.
10. Why  did (not he go to school yesterday? He (was) ill. He (was staying in bed the whole day.
11. Were you ( working) when I phoned you last night? Yes, I (was working).
12. Why are they ( sitting) here now? They (are waiting) for their doctor. The doctor (is) late.
13. Did he ( ask) you to work late last Tuesday? No, he (did not  ask). I ( decided) to work late myself.
14. Yesterday (was) a typical summer day, the sun (was beating) down, the sky (was) cloudless.
15. Yesterday, when he (was opening) the door, he (understood) that he (was doing) it with a wrong key.
16. Every day she ( returns) home, ( has) dinner and (rests). But yesterday she (did not  rest) after dinner. she (was working) at her report the whole evening.

Rikki-Tikki-Tavi - a young mongoose, the main hero of the story. During a flood he has been carried away by water flow from parents.  Waking up, he finds himself in the garden of the house where the British family lives. He has protected their son from a poisonous snake Kara (banded krait) and immediately becomes their friend.  Soon he explores the house and garden and meets with their inhabitants: bird-tailor Darcy and his wife, musky rat Chuchundra — and encounters with cobras Nag and Nagini. Rikki-Tikki-Tavi discovers that Cobra want to kill the people which are living in the house. Later at first he comes into the fight with Nag, then with Nagini, and then destroys them unhatched cubs to save his friends.