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18.-Let's try to get two seats near the stage.
-Listen,we will be lucky enough ______ we can get any tickets.(  )
A.tillB.ifC.sinceD.though

分析 -让我们设法弄到两个靠近舞台的座位.
-听,如果我们能得到一些票的话,我们将会足够的幸运了.

解答 答案:B
A. till 引导时间状语从句:直到…时(为止);在…之前;   B. if 导条件状语从句:如果; C. since 引导时间以及原因状语从句:自从…以来;既然;由于;  D. though引导让步状语从句:虽然,尽管; 即使; 分析句意可知,答语中的前后两句应是互为条件关系,即:如果我们能得到一些票的话,我们将会足够的幸运了;故选B

点评 本题考查从属连词的if用法.做本题时,首先应熟练掌握各从属连词的用法及区别;其次应正确判断出主从句之间的句意关系,然后选出相应的连词.

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