Its d because must wouldn't make sense, could wouldn't make sense, and would wouldn't make sense either so therfore its d
I guess it is a source name. If I'm wrong, sorry
Answer: is
Explanation:
is, is one of the most common linking verbs
Answer:
Someone you can trust and talk to, and that trusts you and talks to you. We need friends to stay happy. Hope this helps!
Answer:
I think the paragraph is really well-written, but I would reccoment not starting the last sentence with the word "and".
Explanation:
