Directions:Thereare 15sentences in thissection.Foreach sentencethere are four choices mark
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Directions: There are 15 sentences in this section. For each sentence there are four choices marked A, B, C and D. Choose one answer that best completes the sentence and blacken the corresponding letter on the answer sheet.
6. ______ you go there early, there won't be much a chance of getting a ticket.
A. Until
B. If
C. Unless
D. If only
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