问题
选择题
After he left college , he was employed in an international company and __
___ there ever since .
A．worked
B．has worked
C．had worked
D．was working
答案
答案：B
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After he left college , he was employed in an international company and _____ there ever since .
A．worked
B．has worked
C．had worked
D．was working
答案：B