Concept:A tag question is a short question added to the end of a statement to confirm or check information.
Explanation:The statement says “We were lucky.”
Here, “were” is the main verb, and the subject is “we.”
When the main statement is positive, the tag question must be negative.
So the tag should use “weren’t” and the pronoun “we.”
Therefore, the correct tag is “weren’t we.”
“didn’t we” is wrong because the verb is “were,” not “did.”
“isn’t it” is wrong because it does not match the subject “we” or the tense.
“did we” is wrong because a positive statement needs a negative tag.
Answer:A. weren’t we