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727.Living in the dormitory means _____ to take care of yourself,understand each others’ differences and share ______ interests.
A.to learn;common
B.learning;ordinary
C.to learn;ordinary
D.learning;common
728.The silence of the library is sometimes broken by a sudden cough or the sound of pages _____.
A.turning
B.turned
C.being turned
D.having turned
