问题
选择题
He _________ in American for five years, and now he works in Shanghai.
A．have worked
B．worked
C．had worked
D．have been working
答案
答案：B
考查时态。根据语境可知他过去在美国工作5年，陈述过去发生的事情，故用一般过去时，选B。
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