Henry's job was to examine cars which crossed the frontier to make sure that they were not
Then one evening,after he had looked through the straw and emptied the factory worker's pockets (17) usual,he said to him,“Listen,I know that you are smuggling things (18) this frontier. Won't you tell me what it is that you're bringing into the country so successfully? I'm an old man,and today's my last day on the job. Tomorrow I'm going to (19) . I promise that I shall not tell anyone if you tell me what you've been smuggling. ”The factory worker did not say anything for (20) . Then he smiled,turned to Henry and said quietly:“Bicycles. ”
A. should
B. might
C. would
D. must