问题
选择题
—Your colleague's spoken English is quite good, Amy．
— No wonder, as she in the USA for two years．
A．worked
B．has been working
C．had worked
D．has worked
答案
答案：A
考查动词的时态。Amy现在在中国，她在美国工作了2年，是过去的事，故用一般过去时。
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