Bill ______ Russia for two years.
Bill ______ Russia for two years.
A、has left
B、left
C、has been away from
D、would leave
【正确答案】：C
【题目解析】：根据for two years可知应该用现在完成时，故排除B，D，leave 是非延续性动词，不能和一段时间的for two years连用，故选C．
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