---Catherine, I have cleaned the room for you.
---Thanks. You_____ it. I could manage it myself.
A. needn’t do B. needn’t have done C. mustn’t do D. shouldn’t have done
---Catherine, I have cleaned the room for you.
---Thanks. You_____ it. I could manage it myself.
A. needn’t do B. needn’t have done C. mustn’t do D. shouldn’t have done