choose the word or group of words that best completes each of the following sentences.
We promised to tell the truth . .?
Answer Details
The most suitable option to complete the sentence is "didn't we". This is because the sentence is in the past tense and is asking if the speaker and the person they made the promise with fulfilled that promise. "Didn't we" is a tag question that is used to seek confirmation or agreement from the listener, and it correctly reflects the tense and subject of the sentence.