阿摩線上測驗
18 Doctors and nurses often need to work night _______ , causing their body to battle against its natural rhythms.
(A) scopes
(B) shifts
(C) clinics
(D) claims
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統計： A(6), B(137), C(38), D(2), E(0) #3226460
統計： A(6), B(137), C(38), D(2), E(0) #3226460
