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21. What great changes! ________ Changsha we visit today is quite _______ different city from what it was ten years ago.
A. A; a B. The; a C. The; / D. /; the
22. AIDS is a disease that _________ the body’s immune system and leaves a person defenceless against infection and illnesses.
A. breaks down B. breaks up C. breaks out D. breaks into
21. What great changes! ________ Changsha we visit today is quite _______ different city from what it was ten years ago.
A. A; a B. The; a C. The; / D. /; the
22. AIDS is a disease that _________ the body’s immune system and leaves a person defenceless against infection and illnesses.
A. breaks down B. breaks up C. breaks out D. breaks into