The cigarette end ________ by a careless woodcutter ________ the big forest fire.
24. ---The last one _______ pays the meal. ---Agreed!
23. Where to get the materials and how to get them ________ at the meeting.
22. Hurry up, _______ you will miss the early bus.
---Shall we meet at 6:00 or 7:00? ---________.
At last he _____ finish the work ahead of time.