—You haven’t got the textbook for my chemistry yet.
—I know, and we to get it for the last five weeks.
A. will have been trying
B. have been trying
C. will be trying
D. had tried
网友回答
A. will have been trying
B. have been trying
C. will be trying
D. had tried
解析：句意：--你们还没有给我弄到化学课本。--是的，我知道，我们在过去的五周里一直试图想得到它。因为时间状语or the last five weeks.排除将来时的两个选项AC，过去完成时表示在过去的某个时候之前已经完成的动作，不符合语境故排除D；由前者的话可知，后者尚未搞到化学课本，后者意为：我们在过去的五个星期里一直都在设法去做（现在仍在努力）。即现在完成进行时（过去开始的动作一直延续到现在，有可能继续下去）。故选B。