Answer:
They want to keep their childhood
What is the name of the book????
A. past progressive
The past progressive tense<span> describes something from the past that is consistently happening. Usually, it sets the stage for the next thing that will happen. It is used with the verb "was or were" and an -ing verb.
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I would say A because going off the text it shows he is rushing for the station, for what? we do not know, so you must asume, so I believe it is A.