Answer:
use the words you've learned regularly when you write and speak.
Explanation:
Vocabulary is simply the word stock that a person uses frequently.
There are many effective ways of expanding one's vocabulary which are writing down new words and looking up their meanings, reading new material, etc but the most effective way to expand vocabulary is to use the words you've learned regularly when you write and speak because this is the surest way to make sure that those words you learned become your core languages.
Yesss most is an idefinite pronoun
No, it is not imagery.
Imagery would tell you how he looks specifically, these are all general observations. You cannot imagine him in a detailed manner with this info. Is he blond? Is he a brunette? Does he have pale skin? If we can't make an image in our mind, then it's not imagery. Imagery consists of SPECIFIC details. For example, imagery would be, "His eyes were a crystal blue, as if they were made of water. It seemed like you could jump right into them and swim for hours."
