单选题
成人英语三级
2017-09-07
By the time you arrive this evening, __________ for two hours．
A．I will study
B．I will have been studied
C．I had studied
D．I will have been studying
参考答案
D
答案解析
【参考译文】到今晚你来的时候，我们就已经学习两个小时了。
【答案解析】本题考查将来完成进行时的用法。By the time you arrive this evening是一个将来的时间，by表示在那之前，所以要用将来完成时，而且后面说学习两小时，说明这个动作到那个时候一直在持续，所以需要用到进行时，因此答案为D。
【答案解析】本题考查将来完成进行时的用法。By the time you arrive this evening是一个将来的时间，by表示在那之前，所以要用将来完成时，而且后面说学习两小时，说明这个动作到那个时候一直在持续，所以需要用到进行时，因此答案为D。
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