问题描述：
The life we were used to （）greatly since 1980.Ach
The life we were used to （）greatly since 1980.
Achange
Bhas change
Cchanging
Dhave changed
The life we were used to （）greatly since 1980.
Achange
Bhas change
Cchanging
Dhave changed
问题解答：
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