问题补充:
Our hometown is no longer it used to be. Great changesin the past few years.
A. what, have taken place
B. that, have been taken place
C. what, took place
D. which, had taken place
答案:
(答案→)A. what, have taken place
B. that, have been taken place
C. what, took place
D. which, had taken place
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