Answer:
Grieve.
Explanation:
The way the question is set up, the answer would be grieve.
you cannot "grief" about someone but, you can have grief over something.
you can grieve, but you have to have grief.
This sentence would probably be a citation in APA style. Citations on research papers are very important since they give due credit to the original owner of the statement. Statements that don't have citations tells the readers that those statements are of the researcher/s alone which would be a problem for them if found out that it wasn't theirs to begin with. This would result to a work of plagiarism which is a grave sin in constructing research papers and is more equated with the act of stealing.
I don't think so about your question
Nick refers to Tom and Daisy Buchanan as careless people because he's witnessed them ruin lives and simply disappear by hiding behind their wealth.