Answer:
It is not good to cry over the spilt milk.
Answer: Algernon says he can wait, but Cecily says she cannot. So Jack, in a moment of brilliance, declares that he will agree to the marriage if Lady Bracknell will ...
Explanation:
Progressive verbs use the form "to be."
"Are eating" takes the form "to be" since something is happening.
Therefore, your answer is B.