Thecomputersmadebyourcompanysellbest,butseveralyearsago...

問題詳情：

The computers made by our company sell best,but several years ago no one could have imagined the role in the markets that they______.  

  playing           to play               played                     ed 

【回答】

知識點：過去將來時及其被動式

題型：選擇題