3.)3. Foreshadowing hints to readers that something is of significance and gets them interested.
4. Exposition helps readers understand the background of the story
D: "<span>Then I could give instructions," she explained, "And have the machine follow them."</span>
Basically she is saying "i love you so much i would do anything for you and i will miss you until i see you again tomorrow."
Kovalf was a committee-man. He had been one for two years and he couldn't take that out of his own head. This only shows how much the Russian society used to value their titles back then and this might actually be true today.
Kovalf could never forget that he was once a committee-man, therefore to boost his own importance, even to himself, he started calling himself "Major".