I couldn't find Peter, did I know where he had gone. [ ] A. neither B. nor C. so D. and

I couldn't find Peter, did I know where he had gone. [ ] A. neither B. nor C. so D. and

The sentence requires a conjunction to connect the two negative ideas: "couldn't find Peter" and "didn't know where he had gone." In English, "neither...nor" is the standard correlative conjunction pair for negative situations, but when the first clause already contains a negative verb ("couldn't"), we use "nor" alone to continue the negation.

Answer: B. nor

The corrected sentence reads: "I couldn't find Peter, nor did I know where he had gone." This structure properly connects two negative statements, where "nor" functions to introduce the second negative idea after "couldn't."

Why not the other options? "Neither" would require pairing with "nor" earlier in the sentence ("Neither could I find Peter nor did I know..."), which isn't the case here. "So" indicates a result, and "and" doesn't convey the negative relationship between the two clauses.