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

参考答案:

C答案为C。不会有很多机会得到票,除非你早点到那儿。unless“除非”;until“直到” if“如果”;if ioly如果......该多好”。只有C选项能用在句中。