_______Mr.Pennington retires,he will receive an annual pension of more than fiftythousand dollars from Packard Incorporated.

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问题 _______Mr.Pennington retires,he will receive an annual pension of more than fiftythousand 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。横线处应填人引导状语从句的连词。备选答案中只有once是连词,故选B。
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