—May I see your ticket, please? I think you ________ in my seat.—Oh, you’re right.My seat is upstairs.I’m terribly sorry.
14. There is no doubt__________since he is always a punctual person.
13._________his size, I guessed that he was a basketball player.
12. But for your help, I_____________the exam.
11.Word came________the president would be shown around our school.
10._________to drugs, he ran out of all his money.