Order inversion: Negative word/phrase+past perfect simple(interrogative)+when/than+S2+Past Simple
6. Hardly had I finished the work when he came.
The answer is: A.
Answer: Walter is happy-go-lucky, while Beneatha is more serious.
Explanation:
I am sure the answer is B.
The third sentence is a hyperbole
There are only two which are in the question
Peace and piece