By the end of next month, you______here for three years.
A、
will have studied
B、
study
C、
will study
D、
have studied
【正确答案】
A
【答案解析】
由句中的时间状语by the end of next month(截止到下个月底)可知，本句应用将来完成时，表示到将来某个时间为止，已经完成的动作。故选A。
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