Directions: In the following question, two statements are given with some words in bold. Which of the following pairs of bold words must be interchanged to make both sentences grammatically correct?

a. Many people think that strengthening(A) gun laws would grieving(B) school shootings, but others don’t mourning(C).

b. Although it has been months, the ameliorate(D) widow is still agree(E) her husband’s brutal(F) murder.