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The life we were used to __________ greatly since 1992.

A. change B. has changed C. changing D. have changed

The life we were used to ________ greatly since 1992.

A. change

B. has changed

C. changing

D. have changed

The life we were used to _______ greatly since 1992.

A．change                                                      B．has changed

C．changing                                                    D．have changed