He looked serious and sorrowful (A). It says in the description "...latent sadness in the expression..." It says it right there in the paragraph.
Answer:
Never gonna give you up
Never gonna let you down
Never gonna run around and desert you
Never gonna make you cry
Never gonna say goodbye
Never gonna tell a lie and hurt you.
Explanation:
Yes they are on the upper and lower half's of the world
He greatly improved existing stream engines for use in factories
Less than a hundred percent
