问题
选择题
We have studied English _____2005.
A．since
B．for
C．in
D．on
答案
答案：A
since+过去的点时间，和现在完成时连用，故选A
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We have studied English _____2005.
A．since
B．for
C．in
D．on
答案：A
since+过去的点时间，和现在完成时连用，故选A