By the time the city council opened the time capsule, the water inside _________ the handwritten letters.
5
writingWhich choice completes the text so that it conforms to the conventions of Standard English?
A
had ruined
B
will ruin
C
is ruining
D
ruined
Correct Answer: A
Choice A is the best answer. The sentence uses the phrase "By the time," indicating one past event happened before another. The past perfect "had ruined" is required.