问题
选择题
Things have changed quickly over the past decade and life in the country is much better than _____ used to be. [ ]
A. that
B. it
C. what
D. one
答案
答案：B
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Things have changed quickly over the past decade and life in the country is much better than _____ used to be. [ ]
A. that
B. it
C. what
D. one
答案：B