elementary justice in the first comers having their seats. Dora decided not to give up her seat.
She got up and said to the lady, "Do sit down here, please. I (not go) far, and I'd rather (stand).
"How very kind of you!" said the lady. "Now I can sit next to my friend. I (have) a seat further down. Can we just exchange seats? Do let me (help) you (move) your luggage?" The train began (move).
On (reach) the other carriage Dora at once seat by the window. She never (expect) it (be) so comfortable. (say) good-buy to the elderly lady Dora settled down at last.

1) sat

2) sitting down

3) looked

4) didn't fall asleep the night before

5) move

6) feeling

7) watching

8) fill

9) haven't seen

10) listening

11) struck

12) thinking over

13) hurry

14) standing

15) sat

16) to be reading

17) interruption

18) took

19) the reward (не уверен)

20) have arrived

Вроде так