Choose the correct question tag to complete the sentence:We’d better…

The correct answer is Option (3) → hadn’t we

Question tag after “had better / ’d better”:

Here “’d” is short for “had”, as in “had better”. So the helping verb is “had”. The sentence is positive, so the tag is negative. So the tag is “hadn’t we”.

Complete sentence: We’d better book the train tickets today, hadn’t we?

Why the Other Options are Incorrect?

Option 1: wouldn’t we — Incorrect. “Wouldn’t” goes with “’d” only when it is short for “would”, as in “would like”. Example: We’d like some tea, wouldn’t we?

Option 2: shouldn’t we — Incorrect. “Had better” gives advice, like “should”. But the tag repeats the helping verb of the sentence, which is “had”, not “should”. Example: We should leave early for the station, shouldn’t we?

Option 4: haven’t we — Incorrect. “Haven’t we” goes with a sentence that has “have” as the helping verb. Example: We’ve booked the train tickets, haven’t we?