The room is in a terrible mess. It _____ cleaned.
举一反三
- The room is in a terrible mess; it __________ cleaned. A: can’t have been B: couldn’t be C: may have been D: would be
- The room is in a terrible mess; it （）cleaned. A: can’t have been B: shouldn’t have been C: mustn’t have been D: will have been waiting
- The room is in a terrible mess; it（）(can’t clean).
- Look at the terrible mess! You _________ cleaned the house before I came back.
- Section B The room is in a terrible mess，it（） cleaned． A: can’t have been B: shouldn’t have been C: mustn’t have been D: wouldn’t have been