-- _____is that used for?---_____ the floor.
32. - He failed his exam again. - But what did you _____? Had he ever been working hard?
31. If you are looking for somewhere to rent, I think there's a(n) _______apartment in my building.
30.-Jane is always lying.- So it’s no wonder that she has no one to ________.
29. It's reported that the price of that building, which you were looking forward to buying, has risen ______ a further 600 yuan a square meter.
28. __________ no need __________ the radio since I've got used to working with it on.