阿摩線上測驗
6. Some countries, such as Australia and Singapore, make voting_________ for their citizens, and
penalties might be imposed on those who fail to do so without a valid reason.
(A) permissive
(B) reminiscent
(C) arbitrary
(D) mandatory
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統計： A(15), B(3), C(7), D(58), E(0) #3056731
統計： A(15), B(3), C(7), D(58), E(0) #3056731
