Where is your sister? Did you ask her

Solution:

The question asks if you asked your sister about something. The options are 'dirty', 'mess', and 'rubbish'. Without further context, it's difficult to definitively choose one. However, if the sister's actions or belongings were the subject, 'dirty' or 'mess' might fit. If it's about something discarded, 'rubbish' could be appropriate. Assuming a common scenario where one might inquire about a sister's messy room or belongings, 'mess' is a plausible completion.

Answer: mess