______ he completed his education abroad, he has been working for a travel agency in Shanghai.

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问题 ______ he completed his education abroad, he has been working for a travel agency in Shanghai.

选项 A、As soon as
B、Since
C、By the time
D、When

答案B

解析该题考查考生对时态的掌握。他在国外完成学业这个行为发生在过去某一点，从那以后一直在做，而且还会继续做下去，因此用现在完成进行时。

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浙江省大学英语三级

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