5. You took those cans to the recycling bank, ________?

The correct answer is a. didn't I. *Explanation:* The answer should be *d. didn't you*. However given the choices it is most similar to *a. didn't I*. Since the main clause is positive ("You took those cans to the recycling bank"), so the tag question should be negative. The auxiliary verb used is "did", and the subject is "you". Therefore, the correct tag is "didn't you?". *Translation:* Ты отнес эти банки в пункт переработки, не так ли?