_________ Mr. Pennington retires, he will receive an annual pension of more t...

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问题 _________ Mr. Pennington retires, he will receive an annual pension of more than fifty thousand dollars from Packard Incorporated.

选项 A. Often         
B. Once
C. Whoever      
D. Sometimes

答案B

解析彭宁顿先生一旦退休,将每年从帕卡德股份有限公司获得超过五万美元的退休金。横线处应填入引导状语从句的连词。备选答案中只有once是连词,故选8。
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