19．The factory we visited today is no longer what it      20years ago，when it was poorly equipped．（　�。�
A．used to beingB．used toC．was used toD．used to be

分析 今天我們參觀的工廠不再是20年前的樣子了，那時廠子配置很差．

解答 答案：D
根據(jù)題意今天我們參觀的工廠不再是20年前的樣子了，what it used to be．意為"過去的，曾經(jīng)的樣子"．故選D．

點評 本題考查一般過去時．要求考生能根據(jù)題干所給語境做出正確判斷．并在平時學(xué)習(xí)時，掌握一些常見固定短語的表達．比如：used to do/be，be used to do，be used to doing，

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