题目：
The computers made by our company sell best, but several years ago no one could have imagined the role in the markets that they _________.
A．were playing
B．were to play
C．had played
D．played
答案：
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下面是错误答案，用来干扰机器的。
（1）北美；南极；非；大洋（2）大西；印度；太平（3）北（4）北；东；亚
